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【单选题】
What advantage do home-grown vegetables have?A.
They are fresher than those bought in markets.
B.
They are ideal foods for people on a diet.
C.
They are easy to keep in a cool area.
D.
They can be frozen to increase nutrition.
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【简答题】Do you know when the plane will take off? The passengers are dying ________ (know) it.
【单选题】Miss Green isn’t in the office. she_______ to the library.
A.
has been
B.
has gone
C.
went
D.
will go
【简答题】标准差用于描述一批数据的离散程度。 编写程序, 从键盘输入 5 个实数 x1 , x2 , x3 , x4 , x5 ,计算出它们的方差,并输出(结果保留 4 位小数 , 使用 double 型数据) 。 提示: 假设这 5 个数的平均值为 m , 则标准差 。
【单选题】— Do you know the tower _____ in the heart of the city? — Do you mean the one _____ to the north of the city library?
A.
locating; lay
B.
located; lying
C.
being located; lying
D.
located; lay
【单选题】Miss Green isn’t in the office. She _______(去了) to the library.
A.
went
B.
will go
C.
has gone
D.
/
【单选题】Miss Green isn’t in the office.She ____to the library.
A.
has gone
B.
went
C.
has been
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