We all need (11) ．Doctors say it is good (12) 0ur (13) ．It makes your heart and body strong． And you'll (14) better about yourself． It's best to exercise(15) a week．Twenty minutes each time is enough．

There are (16 ways to exercise． You can walk， (17) ，play football or swim Many people go to special places to exercise． They are called "fitness centers ． These places have (18) equipment． Some people buy equipment(器械) for their families， But it is very expensive．

E．xercising can be fun． Friends can exercise together (19) a fitness center． How do you exercise? How (20) do you exercise?( )11．

A． exercising

B． exercises

C． to exercise

D． exercised

[单选题]All ______ they have done is good for us all. We should understand them.A.w

[单选题]D．octors say that exercise is important for health, but it be regular exercise .A． can B. will C. must D. may

[单选题]D．octors say that exercise is important for health, but it _______ be regular exercise.A．canB．willC．mustD．may

[单选题]We are pleased to say that we are（）to supply you（）the goods you want.A . of a position，──B . at a position，──C . in a position，withD . at a position，with

[单选题]I (11) Lisa’s good friend． We (12) running stars． We (13) three meals to-gether every day． (14) breakfast， I like tw0 (15)and a glass of milk， and she (16) two hamburgers and two glasses of milk． For (17) ， she (18)a bowl of rice and some chicken ， a

[单选题]Weneedachairman________.A．)forwhomeveryonehasconfidenceB)inwhomeveryonehasconfidenceC．)whoeveryonehasconfidenceofD)whomeveryonehasconfidenceon

[单选题]We are pleased to say that weare（）to supply you（）the goods you want.A . of aposition，──B . at aposition，──C . in aposition，withD . at aposition，with

[单选题]（）doesn’t need to change package of goods or to stop in any place between the origin and destination point.A . Through transportB . Transfer transportC . combined transportD . Motor transport

[试题]5 All managers need to understand the importance of motivation in the workplace.Required:(a) Explain the ‘content theory’ of motivation. (5 marks)

[单选题] For （71） service, we need a virtual-circuit subnet. Let us see how that works. Theidea behind virtual circuits is to avoid having to choose a new （72） for every packet sent.Instead, when a connection is established, a route from the （73） machine to