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1.
the past, doctors did experiments on animals and fruit. But today,3D printing is changing the way doctors study.（ 填入一个适当的介词 ）
【考点】
介词短语; 时间介词in, at, on的用法比较;
【答案】
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单词拼写（单句）
容易
基础巩固
能力提升
变式训练
换一批
1. A little carelessness
the last moment may ruin (毁掉) all your efforts before, so it is necessary to keep careful all the time. （ 填入一个适当的介词 ）
单词拼写（单句）
容易
2. Ben was helping with dinner when the rain beat heavily a
the window.
单词拼写（单句）
容易
3. Hanse practices kung fu and Tai Chi
the park
his home every morning. （ 填入一个适当的介词 ）
单词拼写（单句）
容易
1. The singer is very popular
people, especially teenagers. （ 填入一个适当的词 ）
单词拼写（单句）
普通
2. I
of littering around the park, you should take away your waste paper and plastic bags when leaving.
单词拼写（单句）
普通
3. You must ask
leave of absence if you cannot attend the meeting. （ 填入一个适当的词 ）
单词拼写（单句）
普通
1. The four pandas in Chongqing Zoo were born on the same day ____ 2019.
A.
on
B.
at
C.
in
单选题
普通
2. The Chang'e-6 landed on the far side of the moon ____ June 2, 2024.
A.
at
B.
on
C.
to
D.
in
单选题
普通
3. ____ the night of New Year's Day, we had a wonderful meal.
A.
In
B.
On
C.
At
D.
Of
单选题
普通