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问题 名词解释

纤芯

答案

参考答案：

通常是由纯度达到5个9（99.999%）的SiO2，其余掺入少量GeO2等杂质材料而制成的，掺入少量的GeO2是为了提高纤芯的折射率n1

阅读理解

For Rent
A big apartment for a family of three people. ￥900 a month. Call Mrs. Brown.
Tel：(0591)8355-2147.
Wanted
Looking for a quiet single room under $120 per month. Please call Dick at 159-5912-5856.
Lost
ID card
Name：Jack
Number：350198199812102500
Please call (0591)8838-7166.
Found
A red purse with some money and keys. Come to Room 402 from 7:00- 9:00 p. m. or call Jim at(0591)8378-3021.
根据表格内容，选择最佳答案。
小题1:Please call _____ to rent a three-bedroom apartment.
A．(0591)8838-7166B．159-5912-5856
C．(0591)8355-2147D．(0591)8378-3021
小题2:You can rent your single room to Dick for _____ per month.
A．$150B．$110C．￥900D．￥250
小题3:If you find an ID card,  you can call _____ at (0591)8838-7166.
A．JimB．DickC．JackD．Mrs. Brown
小题4:If you can’t find your purse,  you can go to Room 402 to get it back at _____.
A．7:00 a. m. B．7:30p. m. C．9:30 p. m. D．8 o’clock in the morning
小题5:You want to rent a big apartment for your family for three months. You must take out _____.
A．$2700B．$360C．￥2700D．$120
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单项选择题

关于为第三人利益订立的合同，下列表述正确的是( )。

A．该合同不可以涉及第三人

B．该合同是合同相对性的例外

C．该合同的订立须取得第三人的同意

D．该合同的订立须事先通知第三人
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