(1)求(1+x+x2+x3)(1-x)7的展开式中x4的系数;(2)求(x+4

题型:解答题

问题:

(1)求(1+x+x2+x3)(1-x)7的展开式中x4的系数;
(2)求(x+
4
x
-4)4的展开式中的常数项;
(3)求(1+x)3+(1+x)4+…+(1+x)50的展开式中x3的系数.
考点:二项式定理与性质
题型:解答题
读一读,补全短文。
ate  sat  liked  had  watched  went  excited
     Last week, I had  my first trip on an airplane. It was fun! I 1.         next
to the window. I saw houses, parks, and swimming pools on the ground.
They were all very small! I 2.         the food on the airplane. I 3.          chicken,
rice, icecream and a candy bar.  I drank orange juice. I 4.         TV too.
I 5.         it a lot.  My aunt met me at the airport and we got home very late.
I was very 6.         and I had a dream that night.  In my dream I 7.         on a
trip again.
题型:解答题

在Java中,管理线程组的类是( )。

A.javlanThreadGroup

B.javlanThread

C.javlanRunnable

D.javlanObject

题型:解答题

消化性溃疡病人的饮食指导不正确的是()。

A.适量摄取全脂牛奶

B.溃疡活动期少食多餐

C.避免刺激性食物

D.避免夜间及睡前进食

E.症状重者可以面食为主

题型:解答题

The story which moved us a lot happened _____ May 12th, 2008. [ ]

A. in

B. on

C. at

D. by

题型:解答题


(每小题只有一个最恰当的答案,请将所选答案填入括号内)

案例一:张某在北京购买了一套价格为200万元的住房,面积为180平方米,首付80万元,余款向银行按揭,贷款利率为5.751%。张某选择了等额本息还款方式,分20年还清贷款。
根据案例一,回答1~9题:

借款人在申请住房消费信贷时,银行一般不会给予全额贷款,会要求借款人支付房屋总价款的( )。

A.10%~20%

B.20%~30%

C.30%~40%

D.40%~50%

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