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【判断题】
Among the class, economy is the cheapest type of seats, while first class is the best and most expensive seats.A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】They did considerable work to ______the masses of the United States with the elementary problems of Latin America.
A.
instruct
B.
acquaint
C.
impose
D.
dictate
【单选题】Washington，a state in the united States，was named__________one of the greatest American presidents．
A.
in honour of
B.
in consistency with
C.
in accordance
D.
by means of
【单选题】含孕酮的宫内节育器的避孕机理是
A.
抑制排卵
B.
长期异物刺激导致慢性炎症反应及损伤子宫内膜
C.
使子宫内膜腺体萎缩和间质蜕膜化，干扰受精卵着床
D.
干扰子宫内膜细胞代谢
E.
影响精子获能
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