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【单选题】
下列关于卤族元素由上到下性质递变的叙述,正确的是 ( ) 1单质的氧化性增强 2单质的颜色加深 3气态氢化物的稳定性增强 4单质的沸点升高 5阴离子的还原性增强A.
①②③
B.
②③④
C.
②④⑤
D.
④⑤
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皮皮学刷刷变学霸
举一反三
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
managed
D.
attempted
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
attempted
D.
managed
【单选题】We had to __________a lot of noise when the children were at home.
A.
go in for
B.
hold on to
C.
put up with
D.
keep pace with
【单选题】—When did you get home last night? —It was almost midnight ________ we arrived home.
A.
that
B.
before
C.
since
D.
when
【简答题】孔子是我国古代伟大的思想家、教育家，但他的思想在当时并未受到重视。孔子的思想者当时未收到重视的根本原因是（ ）。
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