下列说法正确的是() A.两列波在相遇的区域内,一定能发生干涉现象 B.波长比障碍物

题型:选择题

问题:

下列说法正确的是              (   )
A.两列波在相遇的区域内,一定能发生干涉现象
B.波长比障碍物或孔的宽度小得多时,能发生明显的衍射
C.次声波和超声波都容易发生明显的衍射现象
D.两列频率下同的波相遇时,介质中振动加强的点在某时刻的位移可能为零
考点:波的干涉波的衍射
题型:选择题

B股交易专户、还贷专户和发行外币股票专户都属于( )。

A.单位经常项目外汇账

B.单位资本项目外汇账广

C.外汇储蓄账

D.个人外汇账户

题型:选择题

夏季,患者进食后发生恶心、呕吐、腹泻。

此时下列何种细菌应不予考虑()

A.宋内志贺菌

B.伤寒沙门菌

C.摩根摩根菌

D.幽门螺杆菌

E.金黄色葡萄球菌

题型:选择题

A round of applause, please, for the Indian man who recently sang for 80 hours straight, setting a new Guinness world record. It’s an impressive feat, to be sure, but let’s just hope he still has a voice. According to Indian newspapers, Rajesh Burbure has been told to keep silent for several days so his vocal cords (声带) can heal.

It was reported that Burbure and his family are in a celebratory mood. “It’s a proud moment for all of us,” his wife told DNAIndia.com.

I, on the other hand, am unable to share their enthusiasm. Don’t get me wrong: I hope the 35-year-old Burbure lives forever, sells a million records and becomes an international celebrity. But his record–singing for 80 hours straight–is about as meaningful as most of the other curious but crazy feats listed in the Guinness Book of World Records.

Granted , I’m not qualified to speak on the subject. I’ve got no world records to my name– and I never expect to have any. Then again, maybe I am qualified to speak for those of us who have better things to do than train for years to sing an 80-hour medley (混合曲) of pop songs.

But let’s not just pick on poor Burbure. He’s not the only person chasing meaningless accolades. The Guinness Book of World Records is full of the names of people who at one time grew the longest hair, or built the biggest bicycle, or baked the largest cheesecake.

To all of these enterprising (有进取心的) souls I ask, simply, “What was it all for?”

Congratulations! For all of your painstaking effort, you became a footnote in a thick book that no one reads, except for you and the person who will eventually surpass you–with one more hour of singing, a few more centimeters of steel or a few more pounds of cheese.

After all, records are made to be broken.

小题1:From the text, we can learn that the author         .

A.has no Guinness records, so he admires Burbures’ feat

B.feels it is a pity he was not invited to share the happiness with the Burbures

C.thinks singing for 80 hours straight is completely meaningless

D.is quite worried about Burbure’s vocal cords小题2:Before someone wins a Guinness record, he or she has to         .

A.become an international celebrity

B.know all about Guinness record

C.practice a great deal

D.bear great stress for fear of injury小题3:We can infer from the article that        .

A.after the 80 hours of singing, Burbure could no longer speak

B.Burbure’ wife didn’t support his attempt to make a Guinness record

C.many have criticized Burbure for his stupid behavior

D.challenging a Guinness record may be harmful to the health小题4:The author’s attitude to the Guinness world records mentioned in the passage is         .

A.positive

B.impressed

C.negative

D.touched小题5:What is the best title for the passage?

A.What Was the Point?

B.Records Are Made to be Broken

C.A New Indian Guinness Record

D.The Guinness Book Is Boring

题型:选择题

儿童自我意识发展的第一个飞跃的基本标志是( )。

A.能用适当的人称代词(如我、你)称呼自己和他人

B.能将自己与他人分开

C.能用外表特征来认识自己

D.产生了初步的主体我

题型:选择题

请补充函数fun(),该函数的功能是:把从主函数中输入的字符串str2接在字符串str1的后面。 例如:str1=“How do”,str2=“you do”,结果输出:How do you do 注意:部分源程序给出如下。 请勿改动主函数main和其他函数中的任何内容,仅在函数fun的横线上填入所编写的若干表达式或语句。 试题程序: #include<stdio.h> #include<conio.h> #define N 40 void fun(char *str1,char *str2) { int i=0; char *p1=str1; char *p2=str2; while( 【1】 )i++; for( ; 【2】 ;i++)*(p1+i)= 【3】 ; *(p1+i)=’\0’; } main() { char str1[N],str2[N); clrscr(); printf("*****Input the string str1 & str2*****\n"); printf("\nstr1:"); gets(str1); printf("\nstr2:"); gets(str2); printf("**The string str1 & str2**\n"); puts(str1); puts(str2); fun(str1,str2); printf("*****The new string *****\n"); puts(str1); }

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