用户跟踪技术不包括（）。A.IP定位 B.Cookie C.网络爬虫 D.蠕虫病毒

最大的六位数是______，最小的七位数是______，他们相差______．

什么是气相氧化法？

阅读理解。

                               Columbus College, 241 Queen Elizabeth Drive, Kowloon City

                                                                     Memo

To: All Staff

From: Jakie Mok, Secretary; Sports Development Committee

Date: May 20, 2010

     A week ago, "Sports for Life" programme was sent to the parents, requiring them to select a sport they

wanted their child to play. Since then, our staff have received lots of calls from parents asking for more

information about it. Here is a memo (备忘录) for your reference when you answer the phones.

Sports 1: Basketball.

     We expect that this will be the most popular of the four sports. Therefore, students should be advised to

sign up as soon as possible. Students will take a private bus to and from Kwun Tong Sports Park. To cover

the cost of hiring a bus, each student will have to pay ＄10 each time. There will be four basketball courts

available for our use with one teacher watching over each game.

Sports 2: Gym

     We will be using St. Peter's Memorial Park. There are two reasons for choosing this park. Frist, it is not

very busy and crowded before 6:00 pm. Second, it has lot of trees with plenty of shade. Students must bring

along two bottles of water to prevent thirst. Three activities, skipping, jogging, outdoor aerobics (有氧运动),

all of which are free of charge, will be arranged. And there will be a teacher on duty for each of the activities.

Sports 3: Hiking

     Hiking (远足) will take place at Kowloon Peak. The activity will start at 2:30 pm and finish 90 minutes

later. Three teachers will accompany the students, and a hiking instructor will accompany each group of 15

hikers. Each instructor will cost ＄75/hr. Students are advised to bring plenty of water and sunscreen.

Sports 4: Swimming

     The Kowloon City Aquatic Centre is a 10-minute walk from our school. Four teachers will go to the pool

and conduct the goings-on from the poolside. We will only be able to reserve the pool for one hour (i.e. 2:45pm

to 3:45pm). Only students skilful at swimming can take up this activity. The pool will have two lifeguards

present. Girls must wear a swimming suit. The cost is ＄10 per visit.

1. Which of the following is TRUE according to the passage? [ ]

A. Students selecting basketball had better register early.

B. Students participating in gym should arrive at 6:00 pm.

C. Hiking usually begins at 2:30 pm and lasts 2 hours.

D. Students having swimming suits can take up swimming.

2. It can be inferred from the passage that _____.[ ]

A. students taking part in basket ball will walk to the courts

B. every student can gain admission to one of the four sports

C. hiking students can have a regular rest in the shade of trees

D. students taking up the four sports should bring bottles of water

3. It can be concluded that _____.[ ]

A. each sport will take only on hour sports

B. students will be charged for the four sports

C. all the sports will take place at Kowloon Peak

D. teachers will accompany students on each sport

4. The purpose of the memo is to _____. [ ]

A. attract students' interest in the programme

B. require the parents to select a sport for their child

C. help the staff explain the programme to the parents

D. remind teachers and lifeguards to be present on time

国籍法是( )

A．国家间解决国籍争端的法律

B．国内法

C．国家确定外国国民的法律

D．具有国际公约性质的法律

遇有（）级及以上大风或恶劣气候时，应停止露天高处作业。

A、六

B、八

C、十