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【单选题】
关于血液循环的描述,正确的是A.
大(体)循环起心室
B.
小(肺)循环起于左心室
C.
大(体)循环内流动的都是动脉血
D.
小(肺)循环内流动的都是动脉血
E.
小(肺)循环主要功能是将静脉血转变成动脉血
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举一反三
【单选题】The mother was afraid to let the boy ______ the tree.
A.
to risk climbing
B.
risk climbing
C.
to risk to climb
D.
risk to climb
【单选题】What can we learn about the dialogue?
A.
The mother was not a good cook.
B.
The boy doesn't like MacDonald.
C.
They sometimes go out for dinner.
【单选题】The mother was nervous because she had not her son who was away at a boarding school.
A.
heard from
B.
heard of
C.
heard about
D.
heard out
【单选题】In the car accident the mother was killed, but her two-year-old son was found_____.
A.
alive
B.
lively
C.
living
D.
live
【简答题】The mother was so sad that she didn't want to say anything.(否定句) The mother was _____ sad _____ say anything.
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