采用三点估算法估算活动持续时间，需要搜集下列各项信息，除了（） A.最可能时间 B.

People in the United States honor their parents with two special days：Mother＇s Day, on the second Sunday in May, and Father＇s Day, on the third Sunday in June．These days are set aside to show love and respect for parents．They raise their children and educate them to be responsible（有责任感的） citizens．They give love and care．These two days make us think about the changing roles of mothers and fathers．More mothers now work outside the home．More fathers must help with child care．

These two special days are celebrated in many different ways．On Mother’s Day people wear carnations．A red one symbolizes a living mother．A white one shows that the mother is dead．Many people attend religious services to honor parents．It is also a day when people whose parents are dead visit the cemetery（墓地）．On these days families get together at home, as well as in restaurants．They often have outdoor barbecues for Father＇s Day．These are days of fun and good feelings and memories．

Another tradition is to give cards and gifts．Children make them in school．Many people make their own presents．These are valued more than the ones bought in stores．It is not the value of the gift that is important, but it is “the thought that counts”．Greeting card stores, florists, candy makers, bakeries, telephone companies, and other stores do a lot of business during these holidays．    

小题1:Which is NOT a reason for children to show love and respect for parents? 

A．Parentsbringchildren

B．Parentsgiveloveandcaretochildren

C．Parentseducatechildrentobegoodpersons.

D．Parentspassawaybeforechildrengrowup小题2:What do you know from the passage? 

A．Mother’sDayandFather’sDayarebothinMay.

B．Fewerwomenworkedoutsidethehomeinthepast

C．Notallthechildrenrespecttheirparents

D．Fathersarenotasimportantasmothersathome小题3:Which do you think is right about “carnation”?

A．It has only two kinds of colors．

B．It refers to the special clothes people wear on Mother’s Day or Father’s Day．

C．People can wear carnations only on the second Sunday in May．

D．It’s a kind of flower showing love and best wishes．小题4:On Mother’s Day and Father’s Day, _______．

A．everyone goes to visit the cemetery

B．people usually have family parties

C．children always go to parents’ home

D．hand-made cards are the most valuable gifts

低合金钢比碳素结构钢更适合于高层及大跨度结构。

下列关于头期胃液分泌特点的叙述，正确的是 ( )

A．只有食物直接刺激口腔才能引起

B．没有体液调节途径参与

C．不存在条件反射

D．酸度高、胃蛋白酶含量较少

E．传出神经是迷走神经

刹车防抱死系统一般表示为（）。

A、BAS

B、EPS

C、EBD

D、ABS

党对公安工作的领导是全面的、有条件的、绝对的。( )