以下是一位同学做“探究形变与弹力的关系”的实验．下列实验步骤是这位同学准备完成的

阅读下面的书信，根据书信内容回答问题。（10分）

Dear Jennifer,

It’s Tuesday , November 11. I’m really busy

today! At 8 o’clock I have math. I don’t like math. Then at 9:00 I have science. It is difficult, but interesting. Then at 10:00, I have P.E. . That’s my favorite subject! I eat lunch at 12:00 . After lunch, I have music. My music class is relaxing. I like my music teacher, Mr Morgan. He’s fun.

Love Selina

小题1:What’s Selina’s first lesson on Tuesday?

小题2:What subject doesn’t she like?

小题3:What subject does she like best?

小题4:Which teacher does she like ?

小题5:What does she think of music class?

One and two ______ three.       [ ]

A. make          

B. are          

C. is          

D. be

6个月小儿，哪些神经反射不正常()

A．腹壁反射(+)

B．踏步反射(+)

C．吞咽反射(+)

D．觅食反射(+)

E．巴彬氏征(+)

成组四个表资料采用基本公式或专用公式计算不校正χ值的条件是（）

A.所有的理论频数均大于5

B.样本总例数大于40，且只有一个理论频数小于5

C.样本总例数大于40，且最小理论频数大于5

D.样本总例数小于40，且最小理论频数大于5t

E.两个样本率均大于5％

在北京子女买房，能提取父母公积金吗？