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【多选题】
属于双子叶植物叶片结构的有
A.
表皮
B.
木质部
C.
栅栏组织
D.
海绵组织
E.
韧皮部
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参考答案:
举一反三
【判断题】实际表面吸收比仅由该表面自身特性决定。
A.
正确
B.
错误
【单选题】---- If he had been warned, he ______ that food yesterday. ---- Luckily he was sent to the hospital immediately.
A.
would not take
B.
would not have taken
C.
had not taken
D.
didn’t take
【单选题】—If he       , he      that food. —Luckily he was sent to the hospital immediately.
A.
was warned, would not take
B.
had been ,warned, would not have taken
C.
would be warned, had not taken
D.
would have been warned, had not taken
【单选题】Because he was ______ of the new limit, he was stopped and warned for speeding.
A.
ignorant
B.
accustomed
C.
reluctant
D.
pathetic
【单选题】四缸冲程发动机一个工作循环中,曲轴共旋转几圈?
A.
四圈
B.
三圈
C.
二圈
D.
一圈
【单选题】Under no circumstances, he was warned, _____ to give the password to someone else.
A.
he was
B.
was he
C.
he could
D.
could he
【单选题】四冲程发动机一个工作循环中,曲轴旋转两周,凸轮轴旋转( )
A.
半周
B.
一周
C.
两周
D.
三周
【判断题】实际表面吸收比仅由该表面自身特性决定。
A.
正确
B.
错误
【单选题】---He ought to have been warned of the danger. ---_______, but he wouldn’t listen to me.
A.
He did
B.
He should
C.
He ought to
D.
He was
【单选题】Because he was ______ of the new limit, he was stopped and warned for speeding.
A.
objective
B.
unaware
C.
indifferent
D.
bounded
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