单项选择题

Scientists generally agree that the Earth's climate will warm up over the next 50 to 100 years ______ it has warmed in the 20000 years since the Ice Age.

A．as soon as
B．as long as
C．as much as
D．as well as
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单项选择题
According to the passage, which of the following statements is true
A．An insect can use its eyespots to protect itself without any cost.
B．The predator of a tropical butterfly fish usually attacks its tail.
C．The predator of a tropical butterfly fish cannot predict in which direction it will escape.
D．A peacock butterfly has eyespots on its claws.
单项选择题
The hawkmoth escaped the attack from the sparrow because ______.
A．an owl came to its rescue
B．the sparrow suddenly saw a hunter's eyes
C．the sparrow was suddenly attacked by another bird
D．the moth showed eye-like marking on its wings
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