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【单选题】
鸡兔同笼,共有98个头,386只脚,编程求鸡、兔各多少只。 代码如下,按要求在空白处填写适当的表达式或语句,使程序完整并符合题目要求。A.
第5行： x<=97 第7行： y=98 - x 第8行： 2*x+4*y==386
B.
第5行： x<=97 第7行： x =98 - y 第8行： 2*x+4*y=386
C.
第5行： x<=97 第7行： x =98 - y 第8行： 2*x+4*y==386
D.
第5行： x<=97 第7行： y=98 - x 第8行： 2x+4y==386
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【简答题】子组件LogicSRlatch用于置位、 信号,并且自带锁定功能。
【单选题】— There are many people over there. What to the old man? — Sorry, I don’t know.
A.
was happened
B.
will happen
C.
were happened
D.
happened
【单选题】—I don’t know why Tom was absent from yesterday’s meeting. —He must have been sick, _______？
A.
isn’t he
B.
didn’t he
C.
wasn’t he
D.
mustn’t he
【多选题】对话排序。
A.
Of course. Let’s go fishing together after the test
B.
I don’t know. But I know that you must have a good time.
C.
Hello, Tom. Where did you go on your last day off?
D.
I like fishing, too. But my friends don’t let me go out
E.
Yes, you are right. I went fishing with my grandfather.
F.
I stayed at home and studied for my English test.
G.
Your parents want you to get good grades.
H.
Yes. Can you teach me fish?
I.
Oh, It’s so boring. Do you know where I went? _________________________________________
【单选题】VIDEO_20191010_222114.mp4 Have you known how to ask for and show directions?
A.
Yes
B.
No
C.
Not yet
【单选题】I don’t know where I ______ my dictionary, which cost me 50 yuan.
A.
have lied
B.
had lain
C.
have laid
D.
have laid
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