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更新 2022-09-03
科目英语
题型单选题
难度中等
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Beijing was under an “orange” smog alert on Feb. 24, which marks the first time the second-highest warning level of a new system introduced last year_______.

A．has been raised	B．raised
C．has risen	D．rose

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Look at the mess the boys made! You _______ have taught them how to behave themselves.

A．must

B．may

C．can

D．should

题型：未知
难度：未知

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_______ I paid a visit to this scenic spot, I was deeply attracted by its beauty.

A．Firstly	B．For the first time
C．The first time	D．At first

题型：未知
难度：未知

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______ has an interest in the lecture can go for a ticket from the office next to the gate of the lecture room.

A．No matter who

B．Whoever

C．Anyone

D．Those who

题型：未知
难度：未知

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The new China was founded in 1949, ______ great changes have taken place.

A．since when

B．after which

C．in which

D．when

题型：未知
难度：未知

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She insisted that we ________ the source of the river and begin our journey there.

A．find

B．found

C．had found

D．would find

题型：未知
难度：未知

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