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【判断题】
合金凝固时,只要有成分过冷就会出现树枝状晶。( )A.
正确
B.
错误
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【单选题】Mr. Johnson, the famous scientist who was reported _______ an important discovery, gave us a talk yesterday.
A.
making
B.
having made
C.
to have made
D.
to make
【简答题】Dictation Fill in the blanks of the following passage according to what you have just heard. Mrs. John B. Dodd of Washington first proposed the idea of a “father’s day” in 1909. Mrs. Dodd wanted (1) ...
【单选题】Mr Johnson.who was born in a poor family,_____a lot of suffering when she was still a child.
A.
went along with
B.
went back on
C.
went through
D.
went into
【单选题】Mr. Johnson ________ the teacher who was in hospital.
A.
took place of
B.
replaced for
C.
substituted for
D.
instead of
【简答题】按照存储单元的工作原理,随机存储器又分为 和 。
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