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A．They began to lay eggs.
B．They changed their migration patterns.
C．Their flying ability improved greatly.
D．They become warmblooded.
答案
更多“A．They began to lay eggs.B．They changed their migration patterns.C．Their flying abilit”相关的问题
第1题
A．They appreciated it very much.
B．They thought it would lay down a solid foundation for the new republic.
C．They all hated it.
D．Generally they were not satisfied with it.
第2题
A．They tend to lay off some workers with little skill immediately so as to reduce cost.
B．They are likely to keep all the employees as long as possible.
C．They tend to wait longer before they lay off any staff than they would do if they were obeying market forces.
第3题
A．criticize heavily
B．praise too much
C．admire a lot
D．envy greatly
第4题
When the Cherokees began to leave their lands, ______.
A．they went in carts
B．they went on horseback
C．they marched on foot
D．all of the above
第5题
When the Cherokees began to leave their lands,
A．they went in carts.
B．they went on horseback.
C．they marched on foot.
D．all of the above.
第6题
When the Cherokees began to leave their lands,__________
A．they went in carts
B．they went on horseback
C．they marched on foot
D．All of the above
第7题
A．They became sick and died.
B．They began to fight the whites.
C．They had to struggle against starvation.
D．They launched a war against the whites which lasted for a hundred years.
第8题
听力原文： Many egg-laying animals merely lay their eggs and leave. Turtles, for instance, and horseshoe crabs, the eggs hatched and the little ones are their own. The current theory about birds is the earliest birds did just that when they were cold-blooded creatures living in warm places. However, when they became warm-blooded creatures living in cold places, they had to remain on the eggs to keep them warm. For this, they needed a place--a nest. Very likely, the first nest was just a primitive hole scraped in the ground. Even now many species still lay eggs in this sort of crude nest. Primitive nests found on the ground were fine for some birds, but others began to elevate their nests in branches, perhaps to avoid predators. These early elevated nests were probably loose platforms of sticks and dried leaves. The type is still built by some birds today. The latest development in nest, the most recent vision, so to speak, is the cup-shaped nest. This is the one we regard today as the typical bird's nest, you know, like a robin's nest.
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A．Their flying ability improved greatly.
B．They became warm-blooded.
C．They began to lay eggs.
D．They changed their migration patterns.
第9题
When the slaves lost their personal freedom and their families, ______.
A．they still kept their African musical tradition
B．they no longer had any social tradition
C．a number of people performed together
D．they began to create a new musical style
第10题
How did the perspective of industrialists in the United States change in the 1970s？
A．They favored free exchange of technology.
B．They supported the protection of patents.
C．They refused to sign international trade agreements.
D．They began to collaborate with Third World nations.
