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【多选题】
关于自由落体运动，下列说法中正确的是（）A.
它是v 0 =0，a=g、竖直向下的匀加速直线运动
B.
在开始连续的三个1s内通过的位移之比是1：4：9
C.
在开始连续的三个1s末的速度大小之比是1：2：3
D.
若g=10m/s 2 ，则物体在下落第3s内的平均速度为15m/s
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举一反三
【单选题】- Do you think Tom is ill?- _________
A.
No, I don't think so.
B.
Yes, he's very well.
C.
Yes, I like him very well.
D.
No, I was ill yesterday.
【简答题】传感器是能感受被测量并按照 转换成可用输出信号的器件或装置。
【单选题】—Was Tom a little ill yesterday? —______. [ ]
A.
Yes,he was not ill.
B.
Yes,but he is better now.
C.
No,he is well.
D.
Certainly.He was not in bed.
【单选题】Tom was absent from school this morning, because sometimes he was a little weak and could ______ill .
A.
take
B.
set
C.
catch
D.
fall
【单选题】Among the winners _________ father is seriously ill in hospital.
A.
stand little Tom who
B.
stood little Tom whom
C.
little Tom stands whose
D.
stands little Tom whose
【单选题】某食品厂在成品包装工招聘广告中要求：求职者应年满18周岁，为非传染病病原携带者，男性求职者优先，录用时签订3年以上劳动合同，该招工广告中违背《就业促进法》原则的内容是关于( )的要求。
A.
男性优先
B.
合同期限
C.
求职者年龄
D.
非传染病病原携带者
【单选题】---Little Tom could hardly pass the exam, _ _______ _? ---_ ______ . Although he was ill the day before the exam.
A.
couldn’t Tom; Yes, he could
B.
could he; Yes, he could
C.
could he; No, he couldn’t
D.
couldn’t he; No, he couldn’t
【单选题】— I haven't seen Mary for several days, is she ill? — _____. Her mother told me that she was in hospital.
A.
I'm afraid so
B.
I hope not
C.
I don't expect
D.
I'm afraid not
【单选题】Tom pretends to be ill because he __________.
A.
doesn’t want to go to school
B.
likes school very much
C.
likes to be ill
D.
has a high fever
【单选题】Mother was worried because little Tom was ill, especially _____ his father HHhhwas away in Canada. [ ]
A.
as
B.
that
C.
during
D.
if
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