问题 选择题

函数f(x)=sin(πcosx)在区间[0,2π]上的零点个数是(  )

A.3

B.4

C.5

D.6

答案

答案:C

f(x)=sin(πcosx)=0,

则πcosx=kπ(k∈Z),cosx=k(k∈Z),

∴cosx=±1或cosx=0,

又x∈[0,2π],

则x=0或x=π或x=2π或x=或x=,

即有5个零点.故选C.

填空题

根据下面短文内容,在短文的空格处填上一个恰当的词,使短文完整、通顺。

     Now students' English handwriting (书法) gets worse and worse. That makes their teachers feel worried.

Is your English handwriting beautiful? If 1______, here are four steps that really work! 

     ◆ Use paper with lines

     Using paper with lines can keep you writing straight 2______ of up or down when you write English words

or sentences. Those lines on the paper can help you to write words in the right size. Be sure to 3______ the lined space completely. And make sure those capital letters (大写字母) are written properly. 

     ◆ Slow down

     If your writing is hard to read, try slowing down a little. For some kids, going slower makes the handwriting

clear. If you write too 4______, it's hard for you to stop where you should, and even worse, you may make

more 5______ . 

    ◆ Hold your pencil right

    When you hold your pencil the correct way, writing is much 6______ . Some kids press down really hard

when they write. That makes the handwriting not nice. Try to be relaxed and don't hold the pencil so hard.

Let your writing appear nice and clean. If you do so, people will guess you are a student 7______ a good habit. 

    ◆ Draw more pictures

    Drawing can improve your handwriting. You need to use the skills to control (控制) your pencil better

8______ you are drawing pictures. Even though you have no chance to draw at school, you can practice

by 9______ at home.

    Handwriting is very important. Imagine you are a world-famous movie star or a well-known sports player,

what do you do when your 10______ run up to you? Give them your autographs (亲笔签名), of course!

阅读理解
Last spring, I was fortunate to be chosen to participate in an exchange study program. In my application letter, I was careful to ____ how much I wanted to see France; evidently, my excitement really came through in my words. Once I ____ that I was going, all I could think about was the fun of foreign travel and making all sorts of new and ____ friends. While traveling was inspiring and meeting people was ____, nothing about my term in France was what I ____.
The moment I arrived in Paris, I was ____ by a nice French couple who would become my host parents. My entire experience was joyous and exciting ____ I received some shocking news from my program coordinator(协调人): there had been a death in my host parents' extended family. They had to travel outside France for several weeks. That afternoon, I had to ____ out of one family's house and into another. The exchange coordinator told me I'd have a ____ this time and asked whether I could share a bedroom with an English speaker. To avoid the temptation(诱惑) to ____ my native language, I asked not to be ____ with an English­speaking roommate. When I got to my new room, I ____ myself to my new roommate Paolo, a Brazilian(巴西人) the same age as I, whom I was surprised to find playing one of my favorite CDs! In just a few hours, we knew we'd be good friends for the rest of the ____.
I left France with many ____, so when people ask me what my favorite part of the trip was, they are always ____ to hear me talk about my Brazilian friend Paolo and the scores of weekdays in class, weeknights on the town, and weekends ____ France we enjoyed together. I love how people ____ seem so different, but end up being so ____. The most valuable lesson I gained from studying in France wasn't just to respect the French people ____ to respect all people,for your next best friend could be just a continent away. I would recommend an exchange program to anyone who wants to experience foreign cultures and gain meaningful ____.
小题1:
A.discussB.expressC.announceD.argue
小题2:
A.approvedB.knewC.warnedD.denied
小题3:
A.stubbornB.anxiousC.universalD.interesting
小题4:
A.boringB.upsettingC.excitingD.promising
小题5:
A.expectedB.likedC.doubtedD.feared
小题6:
A.sponsoredB.witnessedC.greetedD.supported
小题7:
A.untilB.whenC.sinceD.while
小题8:
A.moveB.travelC.walkD.rush
小题9:
A.housekeeperB.leader
C.roommateD.colleague
小题10:
A.learnB.appreciateC.speakD.master
小题11:
A.combinedB.fittedC.involvedD.placed
小题12:
A.addedB.introducedC.devotedD.adapted
小题13:
A.termB.weekC.monthD.vacation
小题14:
A.presentsB.suitcasesC.storiesD.dreams
小题15:
A.surprisedB.disturbed
C.embarrassedD.concerned
小题16:
A.analyzingB.exploring
C.describingD.investigating
小题17:
A.needB.shallC.mustD.can
小题18:
A.generousB.independent
C.similarD.distant
小题19:
A.andB.butC.orD.so
小题20:
A.instructionsB.friendships
C.factsD.data