You______a mosquito here, because the temperature is far below freezing and any mosquito h
A.can"t have seen
B.must not have seen
C.shall not have seen
D.need not have seen
A.can"t have seen
B.must not have seen
C.shall not have seen
D.need not have seen
If you______a bit to the right, we could all sit down.
A.move
B.moved
C.were to move
D.had moved
To travel from England to Scotland you______a passport or a visa.
A.mustn't have
B.haven't got
C.needn't
D.don't need
You are lateIf you______a few minutes earlier, you______him.
A.come; would meet
B.had come; would have met
C.come; will meet
D.had come; would meet
A.rabbit→grass→tiger→fox
B.grass→rabbit→tiger→fox
C.ox→mosquito→spider
D.mosquito→ox→spider
Fishes help curb malaria and other mosquito-borne diseases by eating mosquito larvae.
A.Y
B.N
C.NG
According to the text, which of the following statements is true?
A.It takes the mosquito very short time to suck the blood from you.
B.A lot of blood is needed to produce young mosquitoes.
C.You can feel itch because the mosquito sucks your blood away.
D.The mosquito is still on your body when you feel uncomfortable.
A.identified only one mosquito species instead of six species.
B.thought only three mosquito species transmitted disease.
C.thought there was only one mosquito species.
D.did not know what species was being studied.
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