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【多选题】
如果想要减小矩形波发生电路的周期，可以调节哪些参数？【图片】A.
减小电容C
B.
减小电阻RF
C.
减小电阻R1
D.
减小电阻R2
E.
减小电阻R3
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举一反三
【单选题】My son can’t go to the cinema with you. He must the lessons first.
A.
go on
B.
go over
C.
go down
D.
go into
【单选题】—Maybe Jim can’t go to the park tomorrow .He is ill . —If he doesn’t go , ______.
A.
neither do I
B.
neither will I
C.
so will I
【简答题】( ) A) He will go to the concert. B) He has been to the concert. C) He is not interested in the
concert. D) He can’t go to the concert. 09-06-a2.mp3:
【单选题】He can’t go to the cinema with me because he ____ a meeting.
A.
was having
B.
would have
C.
is having
D.
had
【单选题】The boy is ___________ young that he can’t go to school.
A.
how
B.
what
C.
such
D.
so
【单选题】He is a _____ boy, so he can’t go to the park by himself.
A.
six-year-old
B.
six year old
C.
six-years-old
D.
six years old
【单选题】The boy is _____ young ______ he can’t go to school.
A.
too, that
B.
so, that
C.
too, to
D.
such, that
【单选题】You can’t go to the mall with John, he has got his driver’s license.
A.
even though
B.
because
C.
so
D.
if
【单选题】John can’t go to the party on Thursday because he to go out on school nights.
A.
allowed
B.
is allowed
C.
isn’t allowed
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