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【单选题】
Campaigns began in the early 1980s, when people ______ the negative effects of CO 2 emission.A.
have realized
B.
realized
C.
had realized
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【简答题】A．He was attracted by Mrs Jones. B．He had heard a noise. C．He had run out of gas. D．His tyros were punctured.
【单选题】指出句中状语:Every night he heard the noise upstairs.
A.
every night
B.
heard
C.
the noise
D.
upstairs
【简答题】Frank was a poor man, so he tried to grow ______1_______ he could in his own garden, so that he would not have to buy so many in the market. One evening he heard a noise in his garden and looked out o...
【简答题】"Frank was a poor man, so he tried to grow 1 he could in his own garden, so that he would not have to buy so many in the market. One evening he heard a noise in his garden and looked out of the window...
【单选题】He was about ________to bed________ he heard a noise.
A.
to go; as
B.
going; because
C.
to go; when
D.
going; until
【单选题】在钙磷代谢的调节中甲状旁腺激素的作用是
A.
升高血钙、降低血磷
B.
升高血磷、降低血钙
C.
增加肾小管对钙、磷的重吸收
D.
减少肾小管对钙、磷的重吸收
E.
增加血中钙、磷浓度
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