What should not be blamed for the resurgence of bedbugs？
A. The governmental policy of forbidding certain pesticides.
B. The increased immigration from the developing countries.
C. The recycled mattress industry and frugal dwellers.
D. The dirty surroundings in a home and in the public.
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By saying "As if to make lemonade out of lemons, though, computer algorithms came to the rescue." (Line 5, Para. 2) the author means that ______ .
A. scientists considered solving the problem as easy as making lemonade
B. scientists didn't bow before difficulties and try to solve the problem
C. scientists had already calculated for such a problem so they're calm
D. scientists could do nothing but waiting for others to solve the problem
A．so heavyB．too heavyC．heavy enoughD．heavy as
A. so heavy
B. too heavy
C. heavy enough
D. heavy as
A．She was a woman.B．She wrote too many letters.C．She couldn't graduate from a medical
A. She was a woman.
B. She wrote too many letters.
C. She couldn't graduate from a medical school.
D. She couldn't establish her hospital.
Why some people don't agree to send robots into space？
Astronauts can react to unforeseen circumstances.
B. Men can find the valuable sample while robots can't.
C. Robots don't have such feeling as surprise like men.
D. Robots can't collect the samples as exactly as men.
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