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【单选题】
构成心左缘的结构是A.
右心房和右心室
B.
左心室
C.
右心房
D.
右心房和上腔静脉
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举一反三
【单选题】Decide which of the following sentence incorrectly uses verb tense.
A.
Many times I became so frustrated with the workload that I just want to give up, especially during midterms or finals when the tension is at its peak.
B.
After the house had been burglarized, Smith couldn’t sleep soundly for several months.
C.
Before the storm hit the coast city, we crisscrossed our windows with strong tape.