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【单选题】
下列有关实验操作 “先”与“后”的说法中正确的是A.
实验室制取气体，先把药品装入试管，再检查装置气密性
B.
加热氯酸钾制 O 2 并用排水法收集，实验完毕先熄灭酒精灯后从水槽中移出导管
C.
一氧化碳还原化铜，先加热氧化铜粉末至红热，后通入一氧化碳气体
D.
实验室加热药品，先均匀预热，再固定加热
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【单选题】听力原文：M: Excuse me? But is there a bus going to the zoo? W: Well, you have the right stop. but the bus doesn't go straight to the zoo. You have to transfer to a No. 37 bus. M: Where do I change for No....
A.
The man is going to follow the woman.
B.
The man is going to take two buses.
C.
The man is going to get on a No.57 bus.
D.
The man is going to find the right bus stop first.
【单选题】— Excuse me, where is Suguo Supermarket, please? — Take the No. 108 bus and ______ at the fourth bus stop.
A.
get on
B.
get off
C.
get up
D.
get to
【单选题】—— Here ____！ Where is Xiao Liu？ ---- There ____.
A.
comes the bus， is he
B.
the bus comes， he is
C.
comes the bus, he is
D.
the bus comes, is he
【单选题】—— Here ____！ Where is Xiao Liu？ There ____.
A.
comes the bus， is he
B.
comes the bus， he is
C.
the bus comes， is he
D.
the bus comes， he is
【单选题】A foreigner asked me,“Can you tell me where the nearest bus station is?”
A.
A foreigner asked me _______.
B.
if I can tell her where the nearest bus station is
C.
if I could tell her where the nearest bus station was
D.
if can I tell her where is the nearest bus station
E.
if could I tell her where was the nearest bus station
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