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砂浆：

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题型：名词解释

题目：

砂浆：

答案：

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下面是错误答案，用来干扰机器的。

答案：B题目分析：17g甲基(-14CH3)等于1mol，14C原子中含有14-6=8个中子，H中没有中子，所以1mol甲基(-14CH3)含有8mol中子，①正确；1L0．1 mol·L-1 Na2CO3 不考虑水解，则含有阴离子碳酸根0．1mol，但是在水...

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题型：阅读理解
阅读理解。
     The Video Shop's Winter Sale (大减价) on every CD, VCD and DVD, POP MUSIC, ROCK, JAZZ, DISCO,
COUNTRY & MOVIES.
LIST PRICE. SALE PRICE
$9.5$8.9
$11$9.5
$13.9$11.2
     Sale starts on December 22 and ends on December 30.
     No telephone or e-mail orders (订购) during the sale.
     Open hours:Monday to Friday 9:00 am to 8:00 pm
     Saturday to Sunday 10:00 am to 6:00 pm
     Add: 108 Culture Street
1. The shop _____.
A. sells CDs only
B. is having a sale on everything
C. is having a sale On CD, VCD and DVD
D. is closed
2. _____ are on sale.
A. Only rock CDs
B. Only jazz and country DVD
C. Only movies VCDs
D. All of them
3. You may pay $8.90 for a music CD on December 22. How much should you pay for the same CD On
    November 30th?
A. $8.90.
B. $0.60.
C. $9.50.
D. We don't know.
4. Which of the following is TRUE?
A. You should go to the shop for the CDs, VCDs and DVDs by yourself.
B. You can make a phone call to order the things you want.
C. You can order (订购) through Internet.
D. You can write a letter to order CDs or something.
5. You can buy CDs _____.
A. at 8 am Thursday evening
B. at any time from Monday to Sunday
C. at 8 o'clock Saturday rooming
D. at 5:00 Sunday afternoon
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