单选题 You want to get healthy. You know you need to exercise more. But you are not ready to do intense physical activities. Don't worry! The best thing for most of us may be to just go for n walk. Yes, walk. At a reasonably vigorous clip (five to six kilometers per hour) for half an hour or so, maybe five or six times a week. You may not feel the benefits all at once, but the evidence suggests that over the long term, a regular walking routine can do you good. Walking, in fact, may be the perfect exercise. For starters, it's one of the safest things you can do with your body. It's much easier on the knees than running and doesn't trigger side effects. Regular physical activity is probably as close to a magic bullet as we will come in modem medicine, If everyone were to walk briskly for 30 minutes every day, we could cut the incidence of many chronic diseases by 30 to 40 per cent. Walking is also a great way to lose body fat, so even if you don't 10se any weight, your body will have a healthier composition. Most people find they have to walk at least an hour a day to shed kilo.

单选题What kind of lifestyle do the residents in Shichahai areas maintain? ______

单选题David ______ my cousin for eight years.

单选题China is a large country ______ a long history.A. withB. inC. aboutD. has

单选题Because of modem technology, some mountain areas are not isolated ______ the outside world.

单选题Good managers can create an environment in which different opinions are valued and everyone works together for a common goal. A.大家一定要齐心协力地工作，创造一个良好的环境，发表各种不同看法，要做好经理。 B.为了共同的目标，好经理应该尊重各种不同意见，与大家一起工作，创造良好的氛围。 C.好经理能够创造一种氛围，让不同意见受到重视并且每个人都能为共同目标合作奋斗。 D.为了共同的目标，好经理应该能够提出各种宝贵的意见，为大家创造良好的工作氛围。

单选题The story I"m reading is quite long. It ______ five parts.

单选题I'll give the book to ______ needs it most. A. those B. themselves C. whoever D. any those

单选题—I would never come to this restaurant again. The food is terrible! —______.

单选题The boss told his secretary to ______ the documents for later use.

单选题In no other way ______.

单选题If my lawyer ______ here last Saturday, he ______ me from going.

单选题When ______ to zero degree centigrade, water will be changed into ice.

单选题In a more traditional society, old parents ______.

单选题Our plan______unexpected opposition from the retired workers.A) came toB) came byC) ran intoD) ran over

单选题She ______ my invitation with thanks because of a previous appointment.

单选题The news of the mayor's coming to our school for a visit was ______ on the radio yesterday.

单选题No sooner______stepped out of the hall than it began to rain. A. had we B. have we C. did we D. do we

单选题When the police broke into the house, they found the old man ______ dead on the floor.

单选题All metals are found not to conduct electricity equally well.A) 人们发现，并不是所有金属的导电性能都一样好。B) 人们发现所有金属不能同等用来导电。C) 所有金属被发现不能同样好地发电。D) 人们发现的所有金属并不都是为了很好地发电。