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问题:

[单选] —When can I call on you, afternoon or evening? —________. I’ll be at home all the time.

—When can I call on you, afternoon or evening? —________. I’ll be at home all the time.

问题:

[单选] What the monitor said at the class meeting ________ quite all right.

What the monitor said at the class meeting ________ quite all right.

问题:

[单选] The room ________often cleaned by the students.

The room ________often cleaned by the students.

问题:

[单选]

A . key
B . they
C . obey
D . grey

问题:

[单选] I am very _______ to you for your help.

I am very _______ to you for your help.

问题:

[单选] 从0,1,2,3,4,5这六个数字中,每次取出三个数相乘,可以得到不同乘积的个数是( )

从0,1,2,3,4,5这六个数字中,每次取出三个数相乘,可以得到不同乘积的个数是( )

问题:

[单选] Oceania is a________ landmass.

Oceania is a________ landmass.

问题:

[单选] 下列函数中,为奇函数的是( )

下列函数中,为奇函数的是( )

问题:

[单选] 设集合M={X∈R|X≤-1},集合N={∈R|Z≥-3},则集合MnN=( )

设集合M={X∈R|X≤-1},集合N={∈R|Z≥-3},则集合MnN=( )

问题:

[单选] 用单色光照射金属表面,使金属释放光电子,增大单色光的频率,但同时减小它的强度,则光电子的实际动能(  )

用单色光照射金属表面,使金属释放光电子,增大单色光的频率,但同时减小它的强度,则光电子的实际动能(  )