Which of the following is most unlikely for the authoi to do？
A. To talk to the students who have mental problems．
B. To help students develop a feeling of self-respect．
C. To keep a student from playing alone．
D. To announce a student’s scores in public．
查看答案
Tigers would__________ if men were allowed to shoot as many as they wished．
A. die down
B. die out
C. die away
D. die off
Her suggestion that everybody__________ was not appreclated.
A. sing a song
B. sang a song
C. sung a song
D. singing a song
导管存在于种子植物的木质部，它是由许多端壁形成穿孔的导管分子连接而成的。( )
植物的表皮细胞是由一层排列紧密，不含质体的死亡细胞所构成的。( )
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