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问题 选择题
如果双曲线
x2
64
-
y2
36
=1上一点P到它的右焦点的距离是8，那么点P到它的右准线的距离是（　　）
A．10B．
32
7
7
C．2
7
D．
32
5
答案

设点P到它的右准线的距离是x，∵a=8，c=10，∴e=

5
4
，

∴

8
x
=
5
4
，解得x=
32
5
．故点P到它的右准线的距离是
32
5
．故选D．

阅读理解
阅读理解。
     Tony and Linda are in the dining hall  at  Beijing  International  School.
There are fifty tables in it.
     There are also some pictures about food and drinks on the wall. In the pictures, we can see juice, tea, pork, beef and chicken. We can see some vegetables, too.  They tell us what healthy food is and what healthy drinks
are.
     Tony and Linda come from America. They both like Chinese food and drinks.   Tony likes eating noodles ① _______Linda ②________eating
noodles because  she  can’t use(使用) chopsticks (筷子).   Tony
doesn’t eat pork. He thinks it is unhealthy food. They like eating dumplings(饺子)very much.
1. How many tables are there in the dining hall? 
    _____________________________________________
2. What’s Tony and Linda’s favourite Chinese food?
    _____________________________________________
3. There are _____ in the dining hall.
A. some tables and some students
B. some tables and some teachers
C. some tables and some pictures
D. some students and some teachers
4.选择适当的词填在①处：
A. and          
B. but          
C. in                
D. so
5. 在②处的空白处用not like的适当形式填空：
    _______________________________________
查看答案
单项选择题

急性牙痛的患者医生最先做的事情不应该是（）

A.问诊

B.检查患牙

C.温度测试

D.X线牙片

E.给患者服用止痛药
查看答案