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【多选题】
下面那些核素是天然放射性核素()
A.
钾-40
B.
铀-235
C.
铀-238
D.
钚-239
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【单选题】Tim is ___________ young ___________ go to China. [     ]
A.
to……too
B.
too……to
【单选题】移动到第15行, 向下复制10行,移动文本末尾,粘贴,下面哪个做法是对的?
A.
15G;10yy;G;p
B.
15$;10y;G;p
C.
15G;10y;$;p
D.
15$;10p;G;y
【单选题】Where will Tim go next Sunday?
A.
To the park.
B.
To the zoo.
C.
To the museum.
【单选题】—Hi, Kathy! Any plans for tonight? —Not yet, Tim. I ________ where to go for dinner.
A.
was wondered
B.
was wondering
C.
will wonder
D.
had wondered
【单选题】Mrs Thomson:Where shall we go this weekend?Fang:having a drive to the country.You h.ave never been to a Chinese village,have you?Mrs Thomson:But we don’t have a car. Fang:Why not hire one?Mrs Thomson:...
A.
What is
B.
How is
C.
We’re
D.
What about
【单选题】Tim: Where do you want to ______?
A.
get dressed
B.
clean
C.
eat
【单选题】接受者的 ( ) 会影响沟通的有效性
A.
不好的倾听习惯
B.
不连贯的信息
C.
容易产生歧义的语言
D.
信息的传递方式
【单选题】They haven't decided ______next Sunday. [     ]
A.
go
B.
where went
C.
where to go
D.
where will go
【判断题】若矩阵A可逆,则A的特征值全不为0.
A.
正确
B.
错误
【简答题】轧辊通常由 、 和 三部分组成。
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