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A.Scientists engaged in the experiments
B.Investigations made by people
C.The resistant strain and the sensitive strain
D.The availability of the two strains
答案
更多“In the second sentence of the last paragraph， the word "they" refers__________．”相关的问题
第1题
What type of sentence is "This will surprise anyone who knows football."？
A．A simple sentence.
B．A coordinate sentence.
C．A complex sentence.
D．None of the above.
第2题
The author wrote this text 查看材料
A.to discover sentence patterns and grammatical rules
B.to expand vocabulary
C.to use the target language
D.to encourage unsuccessful language learners to learn independently， actively and purposefully
E.from clues
F.to say strange things
第3题
【B7】
A．second larger
B．the second larger
C．the second largest
D．second largest
第4题
There was a knock at the door. It was the second time someone ______ (interrupt).
第5题
In general, the () stage begins roughly in the second half of the child‟s second year.
A.habbling
B.one-word
C.two-word
D.multi word
第6题
A．On the second Sunday in May.
B．On the third Sunday in May.
C．On the second Sunday in June.
D．On the third Sunday in June.
第7题
A．billion per second
B．bytes per second
C．bits per second
D．band per second
第8题
A.second large
B.the second large
C.second largest
D.the second largest
第10题
Where are the reading rooms located？
A．They are on the first and second floors.
B．They are on the first floor.
C．They are on the second floor.
D．They are in the white building.
第11题
I didnt go to the party last night, because______, I changed my mind.
A．on a second thought
B．by second thoughts
C．on second thoughts
D．on the second thought
