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What measure has been taken to reduce car accidents？
A．Forcing drivers to exercise good judgment at all times.
B．Making highways much safer with improved design.
C．Asking drivers to be more honest.
D．Decrease the output of automobiles.
答案
更多“What measure has been taken to reduce car accidents？A．Forcing drivers to exercise good jud”相关的问题
第1题
What is the meaning of the man？
A．He would like to eat at a Chinese restaurant.
B．He has been to a Chinese restaurant.
C．He doesn't like to eat at a Chinese restaurant.
第2题
Bees do two kinds of【B4】to tell other bees of their【B5】of food. First, there is a round dance.【B6】this dance, the bee moves in a【B7】inside the hive. The round dance is used【B8】the food is close by. The food must not be more than ten meters【B9】If a bee comes back and dance a round dance, other bees know they must go out and look nearby for food. The bees also【B10】the bee that has found the food. The smell tells them what kind of flower to【B11】After watching the round dance and smelling the bee【B12】has found the food, the other bees can find the other source.
A second kind of dance【B13】by the bee is a tail-wagging dance. In this dance, the bee wiggles the【B14】of its body as it moves in a【B15】line. The tail-wagging dance is used when the food is far away. The food must be【B16】ten meters away. The bees know from the speed of the tail-wagging dance just how far away the food source is. The line the bee dances on shows the direction that the bees【B17】fly into find the food. In the tail-wagging dance, the bees also smell the bee【B18】has found the food. The smell tells them what kind of flowers to look for. After watching the tail-wagging dance and smelling the bee that has found the food, the other bees know【B19】things. They know how far【B20】fly, what direction to fly in, and what kind of flowers to look for.
【B1】
A．for food
B．for eating
C．to eat
D．for eating food
第3题
听力原文：M: Is that it for today？
W: That's it.
Q: What does the woman mean？
(15)
A．It has been a good day.
B．That's the place we are going to.
C．We've finished our day's work.
D．The store is closed for the day.
第4题
What measure has been taken to help Gypsy children？
A．They are now taught in their own language.
B．They are now allowed to attend local schools.
C．Special schools have been set up for them.
D．Permanent homes have been built for them.
第5题
听力原文：W: I don't know why we haven't heard anything from Jane about Sunday.
M: We've been in and out all week. Maybe we should try calling her.
Q: What does the man say about Jane？
(13)
A．She has probably some free time this week.
B．She's probably back at home.
C．She is probably not coming on Sunday.
D．She has probably tried to call.
第6题
Meet Your Memory
Memory is something that cannot be seen, touched or weighed. It is thought to be abstract. It is a set of skills rather than an object. Neither is there a single standard for judging a good or poor memory. There are a number of different ways in which a person may have a 'good' memory.
Memory is generally viewed as consisting of three stages; (1) acquisition refers to learning the material; (2) storage refers to keeping the material in the brain until it is needed; and (3) retrieval(提取) refers to getting the material back out when it is needed.
Memory consists of at least two different processes: short-term memory and long-term memory. Short-term memory has a limited capacity and a rapid forgetting rate. Its capacity can be increased by chunking(组成大块), or grouping separate bits of information into larger chunks. Long-term memory has an almost unlimited capacity.
One measure of memory is recall, which requires you to produce information by searching the memory for it. In aided recall, you are given cues(提示) to help you produce the information. In free-recall learning you recall the material in any order; in serial learning you recall it in the order it was presented; and in paired-associate learning you learn pairs of words so that when the first word is given you can recall the second word. A second measure of memory is recognition, in which you do not have to produce the information from memory, but must be able to identify it when it is presented to you. In a third measure of memory, relearning, the difference between how long it took to learn the material the first time and how long it takes to learn it again indicates how much you remember. Relearning is generally a more sensitive measure of memory than is recognition because relearning shows retention(保持) while recognition does not. Recognition is generally a more sensitive measure than recall.
A. Why do we forget things？
B. How do we measure memory？
C. What are the stages memory consists of？
D. What is the difference between short-term memory and long-term memory？
E. What is memory？
F. Who may have a poor memory？
Paragraph 1 ______
第7题
Where Have All the Bees Goner
Scientists who study insects have a real mystery on their hands. All across the country, honeybees are leaving their hives (蜂巢) and never returning. Researchers call this phenomenon colony-collapse (群体瘫痪) disorder. It is reported that 25 to 40 percent of the honeybees in the US have vanished from their hives since last fall. So far, no one can explain why.
Colony collapse is a serious concern' because bees play an important role in' the production of about one-third of the foods we eat. As they feed, honeybees spread pollen (花粉) from flower to flower. Without this process, a plant can't produce seeds or fruits.
Now, a group of scientists and beekeepers have teamed up to try to figure out what's causing the alarming collapse of so many colonies. They hope to find out what's contributing to the decline and to prevent bee disappearance in the future.
It could be that disease is causing the disappearance of the bees. To explore that possibility, Jay Evans, a researcher at the United States Department of Agriculture (USDA) Bee Research Laboratory, examines bees taken from colonies that are collapsing. "We know what a healthy bee should look like on the inside, and we can look for physical signs of disease," he says. And bees from collapsing colonies don't look very healthy. "Their stomachs are worn down, compared to the stomachs of healthy bees," Evans says. It may be that a parasite (寄生虫) is damaging the bees' digestive organs. Their immune (免疫的) systems may not be working as they should. Moreover, they have high levels of bacteria inside their bodies.
Another cause of colony-collapse disorder may be certain chemicals that farmers apply to kill unwanted insects on crops, says Jerry Hayes, chief bee inspector for the Florida Department of Agriculture. Some studies, he says, suggest that a certain type of insecticide (杀虫剂) affects the honeybee's nervous system and memory. "It seems like honeybees are going out and getting confused about where to go and what to do," he says.
If it turns out that a disease is contributing to colony collapse, bees' genes could explain why some colonies have collapsed and others have not. In any group of bees there are many different kinds of genes. The more different genes a group has, the higher the group's genetic diversity. So far scientists haven't determined the role of genetic diversity in colony collapse, but it's a promising theory, says Evans.
What is the mystery that researchers find hard to explain？
A．Honeybees are flying all across the country.
B．Half of the honeybees in the US have died.
C．Honeybees are leaving their hives and do not return.
D．Honeybee hives are in disorder.
第8题
Where Have All the Bees Gone？
Scientists who study insects have a real mystery on their hands．A11 across the country，honeybees are leaving their hives and never returning. Researcher call this phenomenon colony—collapse1 disorder．According to surveys of beekeepers across the country，25 to 4o percent of the honeybees in the United States have vanished from their hives since last fall .So far，no one can explain why．
Colony collapse is a serious concern because bees play an important 11ole in the production of about one—third of the foods we eat．As they feed，honeybees spread pollen from flower to flower．Without this process，a plant can’t produce seeds or fruits．
NOW，a group of scientists and beekeepers have teamed up to try to figure out what’s causing the alarming collapse of so many colonies． By sharing their expertise in honeybee behavior，health， and nutrition，team members hope to and out what’s contributing to the decline and to prevent bee disappearances in the future．
It could be that disease is causing the disappearance of the bees．To explore that possibility，Jay Evans，a researcher at the United States Department of Agriculture（USDA）Bee Research Laboratory2，examines bees taken from colonies that are collapsing． “We know what s healthy bee should look like on the inside，and we can look for physical signs of disease，”he says．And bees from collapsing
colonies don’t look very healthy． “Their stomachs arc：worn down，compared to the stomachs of healthy bees，”Evan8 says．It may be that a parasite is damaging the bees’ digestive organs．Their immune systems may not be working as they should．Moreover，they have high levels of bacteria inside their bodies．
Another cause of colony—collapse disorder may be certain chemicals that farmers apply to kill unwanted insects on crops，says Jerry Hayes，chief bee inspector for the Florida Department of Agricuhure3．Some studies，he says，suggest that a certain type of insecticide affects the honeybee’s
nervous system（which includes the brain）and memory．“It seems like honeybees are going out and getting confused about where to go and what to do，”he says.
If it turns out that a disease is contributing to colony collapse，bees’ genes could explain why some colonies have collapsed and others have not．In any group of bees there are many different kinds of genes．The more different genes a group has，the higher the group’s genetic diversity.So far scientists haven，t determined the role of genetic diversity in colony collapse，but it’s a promising theory，says Evans．
第 36 题 What is the mystery that researchers find hard to explain？
A．Honeybees are flying all across the country.
B．25-40 percent of the honeybees in the US have died.
C．Honeybees are leaving their hives and do not return.
D．Honeybee hives are in disorder．
第9题
第10题
