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【单选题】
列车运行图按照列车之间运行速度差异可以分为A.
A平行运行图
B.
B双线运行图
C.
C连发运行图
D.
D追踪运行图
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【简答题】Both of the boys are good at singing.(翻译)
【单选题】—What about the student in your class, Mr. Wang? —The doctor said that ________ sleep caused him poor memory and poor concentration.
A.
lacking of
B.
lacked in
C.
lacking
D.
lack for
【简答题】____________(夫人)Wang is a doctor.
【单选题】Can I make an _________ with Doctor Wang?
A.
appointment
B.
appoint
C.
disappoint
D.
disappointing
【单选题】. Doctor Wang _____ at seven o’clock for the conference, but she didn’t turn up.
A.
should have arrived
B.
should arrive
C.
should be arrived
D.
should be arriving