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【简答题】
如图是一架托盘天平。 (1)写出部分结构名称。 2____;4____;5____;6____;8____。 (2)称量前要明确天平的____。 (3)使用天平时,取放砝码应用____;潮湿物品或化学药品____(选填“能”或“不能”)直接放在托盘上。
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举一反三
【简答题】在横线上填写ABCD序号 We all enjoy____. A play basketball B playing basketball C. to play basketball D played basketbal
【简答题】Point out the problems of the following sentences, and then revise them. 1) Ron tries to call home once a week. To stay in touch with his parents. 2) Andy forgot the time he missed the final exam. 3) ...
【单选题】已知一棵二叉树的先序遍历结果为ABCDEF,中序遍历结果为CBAEDF,则后序遍历的结果是( )。
A.
CBEFDA
B.
FEDCBA
C.
CBEDFA
D.
不确定
【简答题】Point out the problems of the following sentences, and then revise them. 1) Ron tries to call home once a week. To stay in touch with his parents. 2) Andy forgot the time he missed the final exam. 3) ...
【单选题】We are not supposed ______ basketball on Sundays.
A.
to play
B.
playing
C.
with playing
D.
played
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