下列情况不宜选用闸阀的是( )。 A．管径大于50mm B．管径小于等于50mm

阅读理解。

     Li Ming is staying with the Wang's family for the weekend.

    Today it is warm and fine. The family are having dinner in the garden. They often have dinner in the garden

on a warm and fine spring day. Now Mr and Mrs. Wang are sitting at the table with Li Ming under a tree.

    "It's great to have dinner out here on such a lovely day," Mrs. Wang says. "What's the weather like in your

hometown, Li Ming?" Mr. Wang asks. "It's not very warm in spring. But I like the spring there best." "Help

yourself to some cakes, Li Ming," Mrs. Wang says. "Thanks," says Li Ming."The cakes are very nice. I enjoy

the dinner very much."

1. Li Ming is staying with the Wang's family ______. [ ]

A. for a week

B. for a day

C. for the weekend

D. for a month

2. It's not a cold spring day, is it? [ ]

A. Yes, it is.

B. No. It's a warm spring day.

C. No. It's a warm winter day.

D. Yes. It is a warm spring day.

3. The family are having their dinner ______. [ ]

A. in the house

B. in the garden

C. in the park

D. in the hotel

4. What's the weather like in Li Ming's hometown? [ ]

A. It isn't very cold in spring.

B. It's very nice.

C. It's not very warm in spring.

D. It's very cold.

5. How does Li Ming like the dinner? [ ]

A. He enjoys the dinner very much.

B. He only enjoys the cake.

C. He eats a lot.

D. He doesn't enjoy the cake.

公司股票回购可能对上市公司经营造成的负面影响不包括( )。

A．股票回购需要大量资金支付回购的成本，易造成资金紧缺，资产流动性变差，影响公司发展后劲

B．回购股票可能使公司的发起人股东更注重创业利润的兑现，而忽视公司长远的发展，损害公司的根本利益

C．股票回购容易导致内幕操纵股价

D．股票回购导致公司股票市场价值减少

三、完形填空 （30分）

My elder brother Steve, in the absence of my father who died when I was six, gave me important instructions that helped me grow into an adult． For example, Steve taught me to face the   36   of my behavior． Once when I returned in   37   from a Saturday baseball game, it was Steve who   38   the time to ask me what happened． When I

39   that my baseball had flown through Mrs．Holt’s basement window,  40   the glass with a crash, Steve encouraged me to   41   to her．  42  , I should have been playing in the path between buildings．  43  my knees shocked as I explained, I offered to pay for the window if she would   44  my ball．

I also learned from Steve that   45   property is a sacred(神圣的) thing． After I found a shiny silver pen in my fifth-grade classroom, I wanted to   46   it, but Steve explained that it might be   47   to someone else in spite of the fact that it had little value． He reminded me of   48   I’d hate to lose the small dog my father gave me． I returned the   49   to my teacher, Mrs David．

Yet of all the   50   Steve gave me, his respect for   51   is the most vivid in my mind． When I was twelve I killed an old brown sparrow in the yard with a BB gun． 52

with my accuracy, I screamed to Steve to take a look． I shall never forget the  53  : he stood for a long moment and stared at the bird on the ground． “Did it   54   you first, Mark?” he asked． I didn’t know what to answer． I really felt terrible then, but that moment   55   out as the most important lesson my brother taught me．

36．     A． reasons                     B． realities               C． questions              D． results

37．     A． joy                           B． tears                    C． surprise                D． smiles

38．     A． took                         B． spent                    C． paid                     D． got

39．     A． insisted                     B． added                   C． told                     D． explained

40．     A． kicking                     B． beating                 C． brushing              D． breaking

41．     A． apologize                  B． recognize             C． send                    D． offer

42．     A． Above all                  B． In all                   C． First of all            D． After all

43．     A． Because                    B． Although              C． But                      D． As

44．     A． give                          B． return                  C． pay                      D． find

45．     A． individual                 B． public                  C． personal               D． valuable

46．     A． save                          B． keep                    C． pick                    D． return

47．     A． valuable                    B． unique                 C． important             D． beautiful

48．     A． why                          B． when                   C． how much            D． what

49．     A． ball                          B． pen                      C． dog                     D． money

50．     A． information               B． explanation           C． lessons                 D． instructions

51．     A． life                           B． people                  C． family                 D． animals

52．     A． Proud                       B． Encouraged          C． Relaxed               D． Excited

53．     A． way                          B． time                     C． place                   D． scene

54．     A． affect                        B． interrupt               C． hurt                     D． fight

55．     A． reaches                     B． stands                  C． turns                    D． holds

小说中的老人是一个怎样的艺术形象？清根据文意回答。

铸件中出现缩孔和缩松的原因主要有哪些？