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阅读理解。 NEW YOUR MUSEUM The largest specializing(专业研究)in American history. Open: Mon. to Fri: 9:00a.m. -5:00p.m. Sat: 9:00 a.m. -1:00 p.m Address:1100 Chesnut St. New York Telephone:77364431 THE CITY FLOWER SHOW 8 APPRIL TO 17 APRIL Price: ¥50 for adults(成年人) ¥25 for  children Address: 112 Kendal Way Chesterton Cambridge CB4 1LT Telephone: 55539561 ENGLISH SUMMER CAMP(夏令营) How will you spend your summer? English Summer Camp 2006 at University of Toronto, Canada! Ages: 13 to 18 For more Information, Call CEE/DCCIEE at (010) 6606-2607 POP MUSIC WEEK Bands from home and abroad will give performances in Chaoyang Park, Beijing. Chinese singers like Liu Huan will also share(分享)music with fans. Price: 30-50yuan. Time:9:00a.m-9:00 p.m 1. New York Museum is closed on ______. A. Monday B. Friday C. Saturday D. Sunday 2. If you want to get more information about English Summer Camp, you can ______. A. go to Cannda B. write to CEE/CCIEE C. call at (010) 6606-2607 D. send an e-mail to University of  Toronto 3. ______ will give performances in Pop Music Week in Chaoyang Park. A. Bands B. Dancers C. Students D. Both A and C 4. Linda is a seven-year-old girl. She wants to watch the City Flower Show with her parents. How much school they pay? A. ¥ 125 B. ¥150 C. ¥75 D. ¥ 50
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【多选题】如图所示,为一皮带传动装置,右轮的半径为r,a是它边缘上的一点。左侧是一轮轴,大轮的半径为4r,小轮的半为2r,b点在小轮上,到小轮中心的距离为r,c点和d点分别位于小轮和大轮的边缘上,若在传动过程中,皮带不打滑,则( )
A.
a点与b点的线速度大小之比为1:2
B.
a点与b点的角速度大小之比为1:1
C.
a点与c点的角速度大小之比为2:1
D.
a点与d点的向心加速度大小之比为1:1
【单选题】如图 所示为一皮带传动装置,右轮的半径为 r , a 是它边缘上的一点。左轮是一个轮轴,轮半径为 4r ,轴半径为 2r , b 点在轴上,到轴心的距离为 r , c 点和 d 点分别在轴和轮的边缘。若在传动过程中皮带不打滑,则正确结论是
A.
a 点与 b 点的线速度大小相等
B.
a 点与 b 点的角速度大小相等
C.
a 点与 c 点的线速度大小相等
D.
a 点与 d 点的角速度大小相等
【单选题】滚柱式单向离合器是依靠 C 进行锁止或分离的控制。
A.
:自动变速器油液
B.
:楔块的长、短头
C.
:滚柱在内外座圈的不等距斜槽中滑动
D.
:电磁线圈的电磁力
【多选题】You need ()()looked at the material inthe students' book in detail
A.
to
B.
have
【多选题】如图所示为一皮带传动装置,右轮的半径为r,a是它边缘上的一点,左侧是一轮轴,大轮的半径为4r,小轮的半径为2r,b点在小轮上,到小轮中心的距离为r,c点和d点分别位于小轮和大轮的边缘上,若在转动过程中,皮带不打滑,则( )
A.
a点与b点的线速度大小相等
B.
a点与b点的角速度大小相等
C.
a点与c点的线速度大小相等
D.
a点与d点的向心加速度大小相等(提示:向心加速度 )
【单选题】I looked at the plans for your new house. This is earthquake country. You need to fortify the frame or you’ll have a disaster with the firsttremor.
A.
shake
B.
build
C.
strengthen
D.
destroy
【单选题】若直线回归方程中的回归系数 为负数,则()
A.
r为0
B.
r为负数
C.
r为正数
【单选题】两个变量的直线回归方程中,若回归系数为负,则:
A.
表明两个变量正相关
B.
表明两个变量负相关
C.
表明相关程度很弱
D.
不能说明相关的方向和程度
【单选题】You need to have looked at the material inthe students' book () detail
A.
for
B.
of
【判断题】齿轮油工作时,产生的小气泡有利于齿轮油的润滑。
A.
正确
B.
错误
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