【判断题】【消耗次数：1】
A: My camera isnt working properly. B: Here, let me see it.
①
正确
②
错误
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相关题目
【单选题】
My uncle _________ to see me. He’ll be here soon.
①
comes
②
is coming
③
had come
④
came
【单选题】
A: This meal is on me. [填空]. B: Thanks, but isnt it my turn to treat you?
①
Its none of your business
②
Ill treat you
③
My pleasure
④
I invite you
【单选题】
Woman: Bob, do you think you can lend me fifty dollars? Bob: Let me see. ____
①
You know I have no money at all.
②
Sorry, I don’t think I have much with me.
③
I don’t think you should do it.
④
Oh, I have quite a lot.
【单选题】
If my lawyer ___ here last Saturday, he ___ me from going.
①
had been; would have prevented
②
had been; would prevent
③
were; would prevent
④
were; would have prevented
【单选题】
7. My uncle __________ to see me. He’ll be there soon.
①
comes
②
is coming
③
had come
④
came
随机题目
【判断题】
<img src=http://p.ananas.chaoxing.com/star3/origin/7df43063800ce03ac5ba601f7d9c3dd2.png/>
①
正确
②
错误
【判断题】
对于分布函数F(x)，有性质<img class=jc-formula data-tex=F（-\infty ）=-1，F（+\infty ）=1 src=https://huaweicloudobs.ahjxjy.cn/E2BB3D7FE163C1B2D0CAB2B95926EBBB.png style=vertical-align: middle;/>.
①
正确
②
错误
【多选题】
关于正态分布<img class=jc-formula data-tex=N(\mu ,{ \sigma }^{ 2 }) src=https://huaweicloudobs.ahjxjy.cn/CAA65D1EC6C1DBEDB20A490E6E422BA0.png style=vertical-align: middle; width: 77px; height: 29px; width=77 height=29/>，下列正确的是
①
<img class=jc-formula data-tex=P(X\le \mu )=\frac { 1 }{ 2 } src=https://huaweicloudobs.ahjxjy.cn/8D0D906A45C5F856FBB82E3CC91F2BA4.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=\frac { X-\mu }{ \sigma } \~ N(0,1) src=https://huaweicloudobs.ahjxjy.cn/68E9F7BE2936505CACBBA73F433FFC91.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=\mu 一定时，\sigma 越小，其概率密度函数图形越陡。 src=https://huaweicloudobs.ahjxjy.cn/9303FE8C0038493E66620B7961A939B3.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=\mu 一定时，\sigma 越大，其概率密度函数图形越陡。 src=https://huaweicloudobs.ahjxjy.cn/B19ACA96F69602C3A83F1FD22048D322.png style=vertical-align: middle;/>