Consumers often buy （) impulse what they do not need.

A . 天冬酰胺 B . 甘氨酸 C . 谷氨酸 D . CO E . 一碳单位

A . A、6 B . B、3 C . C、1.5 D . D、12

A . 磷酸核糖焦磷酸 B . 天冬酰胺 C . 谷氨酸 D . HCO E . 碳酸核糖焦磷酸

A . 正确 B . 错误

A . 手动 B . 自动 C . 点动 D . 运行

A . A、放大增益 B . B、互调产物 C . C、网间协议 D . D、互调截获点

PRPP酰胺转移酶催化() A、PRPP生成磷酸核糖酰胺 B、IMP合成AMP C、IMP生成GMP D、R-5-P生成PRPP E、甘氨酸合成嘧啶环

A．胸腺嘧啶核苷酸 B．腺嘌呤核苷酸 C．尿嘧啶核苷酸 D．鸟嘌呤核苷酸

If you are saving for a big purchase like a mountain bike or a school trip，where would you save your money？ One place to save money is the bank Putting your money in a savings account will help your money early more money If you put your money in a piggy bank(猪形储蓄罐)，one year later you’11 still have the same amount of money you put in.If you put your money in a savings account，one year later, you’ll have more money than you put in Why？ When you keep your money in a bank，your money earns interest.Interest is the amount of money a bank pays you to use your money.The bank uses your money (and the money of other people，too)to loan money to people and businesses. The bank will send you a statement several times a year A bank statement tells you how much money you have in your account，It also tells you how much interest you have earned.If you leave your money in the bank，you Can watch it grow! Another way you can save money is to buy a certificate of deposit or CD.If you have some money that you don’t need to use for a long time，this is a good way to make your money grow. You Can buy a cd at a bank.You agree not to use the money for a certain period of time That period might be from six months to five years.You Can’t touch your money during that time If you do，you must pay a penalty，or fee. 第6题：Your money will earn more money if you put it A．in your room B．in a piggy bank C．in your pocket D．in a savings account

When you buy a T-shirt, or a fur coat in a store, it often carries a label (标签) telling who made it or from what store it was bought. Indeed, some labels show the dress is famous and it is very expensive, so buyers secretly wish they might be carried for ever. On the other hand, buyers who deal with the cheapest products(产品) would be pleased to do away with labels entirely. However, there is another label more important than the one showing from which store the dress was bought. When a person buys a fur coat ,or a jacket, from a store, a label telling what the product is made of should be carried to it. This label is required by law. Besides telling what the product on show is made of, the label should be in clear English and be where one can find it easily. The information on the label must be the truth. The reason for this label is that most buyers today aren't expert enough to know exactly what kind of fur or material they are buying. The buyer must believe in the store that sells the products or in what the labels say. In the article ,the author says a little about ______. A．black-market furs B．managers' office C．chemical laboratories D．clothing stores

Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health. The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture. The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution. It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive. 6. According to the passage, food supplies have been increased by all the following except_____________. A.pesticides B.artificial fertilizers C.improved varieties D.transportation 7.How many chemicals are still less familiar to the scientists？() A.20,000. B.1,000 C.19,000 D.21,000. 8.Why will people prefer GM food in the future？() A.Because it uses less pesticides. B.Because it is much cheaper. C.Because the production is increased. D.Because it is organic food. 9.Which of the following is NOT true？() A.By 2050, the world population will grow to ten or eleven billion. B.In the 21st century, GM food will take the place of conventional food. C.More and more people will reduce the overall land available for farming. D.More and more people will consume more food and occupy more space. 10.The author’s attitude towards GM food is _______. A.negative B.positive C.critical D.uncertain

A．categorykiller B．factoryoutlet C．specialtystore D．superstor E．powercenter