题目内容
The detective, ________ to read a newspaper, glanced at the man ________ next to a woman.
A.pretending; seat B.pretending; seated
C.pretended; seat D.pretended; seated
B
【解析】
试题分析:考查分词用法。本题第一空中的动词pretend与句子主语the detactive之间构成主动关系,所以使用现在分词做状语。第二空中的seated是过去分词转换的形容词在句中做宾语补足语,对the man进行补充说明;句意:那位侦探,假装在看报纸,迅速地看作者一个女性旁边的那个男的。故B正确。
考点:考查分词用法
点评:本题的第一空是分词做状语,当分词做状语的时候,如果构成分词的动词与句子的主语构成主动关系,就使用现在分词做状语;当二者构成被动关系,使用过去分词做状语。如果分词的动作发生在谓语动词之前,就使用分词的完成式。如果分词与句子的主语没有关系,可以使用状语从句或者独立主格结构。第二空是分词做宾语补足语,过去分词作宾语补足语是非常重要的语法点,学生要掌握以下的内容:能够接过去分词作宾补的动词有1. 表示感觉或心理状态的动词.如:see, watch, observe, look at, hear, listen to, feel, notice, think等;2.表示"致使"意义的动词.如:have, make, get, keep, leave等;3."with +宾语+过去分词"结构中,过去分词用作介词 with的宾语补足语.这一结构通常在句中作时间,方式,条件,原因等状语.
People are overweight for many reasons, the most important one of which is that they eat the wrong foods, get the wrong types of calories per meal, and they also eat meals at the wrong time each day. Food is more powerful than any weight loss pill, because the food that you eat can either make you thin or fat. This is true because your body is like an engine, and it only needs certain foods at certain intervals(间隔)each day.
Low-calorie Diets Do Not Work
The reason people cannot lose weight by starving themselves is that their metabolism(新陈代谢)will detect any major drop in calories and it will then adjust(调整)itself by burning fewer calories each day. That is the reason why you can eat 1,000 calories per day and not lose any weight, while your friends can eat 2, 500 calories per day and not gain any weight.
Low-fat Diets Do Not Work
Many people in today’s society are buying mostly low- fat or non-fat food at the grocery store. Everybody knows how much fat is inside the food they buy. However, people are getting fatter than ever before by doing this. They are not losing weight by changing to this low-fat lifestyle.
Losing weight has nothing to do with these things. One of the most important things you can do to control your weight is to eat the proper foods, such as fruit and vegetables, eat them at the right time, and exercise every day. If people make this a habit, they will lose weight.
【小题1】What is the main reason why people are overweight according to the author?
| A.They eat the wrong foods at the wrong time. |
| B.They eat food with lots of calories. |
| C.They don’t take any weight loss pills. |
| D.They burn many calories every day. |
| A.tell readers not to buy low-fat or non-fat food |
| B.tell readers how to lose weight |
| C.tell readers about an important scientific discovery |
| D.call on people to lose weight and stay healthy |
a. do exercise every day b. eat meals at the right time
c. eat fruits and vegetables d. eat low-fat or sweet food
e. eat the proper foods at each meal
| A.a, b, c, d | B.a, b, d, e |
| C.a, c, d, e | D.a, b, c, e |
Europe’s deadly outbreak of a rare form of E. coli bacteria (大肠杆菌) has brought new attention to food safety issues. One of the problems when people get sick from food is that the simplest question is often difficult or even impossible to answer. Just what did the people eat that made them sick?
Of course, one way to avoid these medical mysteries is to keep dangerous organisms out of the food supply. This is easier said than done, but scientists keep looking for new ways.
Scientists in the United States have developed an experimental system that uses a high-tech optical scanner. The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce. These can be sources of E. coli. E. coli bacteria naturally live in the intestines(肠) of humans and many animals. Most kinds of E. coli are harmless but some can make people sick.
The new scanner can also show damage and imperfections that might make the produce unappealing to shoppers.
Scientists designed the system at a Department of Agriculture research center in Beltsville, Maryland. Moon Kim of the Agricultural Research Service led the team.
MOON KIM: “We were requested, we were asked, to develop a method to detect contamination in produce. So we started with the apple as the model sample.”
The scanner uses a high-speed camera placed over the conveyer belt that moves the produce along. As the apples move along the belt, the scanner captures images of each piece of fruit.
Moon Kim says the team hopes the system will be available before long.
MOON KIM: “We are targeting for development in commercial plants for the next several years.”
The scanner can direct a sorting machine to separate the bad apples from the good ones. The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.
【小题1】What is the main topic of the text?
| A.Bacteria. | B.A high-tech scanner. | C.A camera | D.Food safety. |
| A.broke out all over the world | B.comes from soil or animal waste |
| C.is extremely harmful to health | D.does not cause illness |
| A.can help to sort out different fruits |
| B.make the produce appeal to shoppers |
| C.can only capture images of the whole apple |
| D.can identify the presence of contaminants |
| A.The scanner needs to be improved. |
| B.The scanner will be available in the next several years. |
| C.Moon Kim is unwilling to develop the scanner. |
| D.The scanner is connected to a sorting machine. |