题目内容

【题目】 Havent met Mary lately. What has happened to her?

Well, its about three months ________she worked here.

A. before B. after C. since D. when

【答案】C

【解析】

试题分析:句意:--最近没有见过玛丽。她发生了什么事情。--玛丽不在这里工作大约3个月了。A. before 之前 ;B. after 之后 ;C. since 自从 ;D. when时间点。It was+时段+before+从句(过去时),It is+时段+since+从句(过去时)根据has happened现在完成时态得知,答语中its是it is.故选C。

练习册系列答案
相关题目

【题目】 Many environmentalists and entrepreneurs are looking for ideas on how to “capture gold” that is, how to collect and convert plastic waste into new plastic or fuel.

OK, describing plastic waste as potential “gold” may be overdoing it. But the campaigners say that publicizing the notion that plastic is worth something may help reduce the amount of waste that ends up in oceans and the bellies of sea creatures.

To that end, they have set up a competition inviting members of the public to submit ideas online. Organizers will take the best ones to the Rio+20 Earth Summit (峰会) in Rio de Janeiro next month, where they are planning a daylong side event called Plasticity focusing on issues related to plastic pollution.

The plastic waste problem is gaining broader attention as environmentalists, scientists, manufacturers and the public become more aware of the sheer volume of the stuff that finds its way into the sea.

More than 260 million metric tons of plastic are now produced per year, according to the trade association PlasticsEurope. The majority of that is not recycled. Most of it ends up in landfill, and a significant amount ends up as litter on land, in rivers and in the oceans.

Technological advances have made clear that it is possible to reuse much of this plastic by turning it into fuel or new products. Yet the companies that have come up with such solutions have not achieved the economies of scale that would allow them to function profitably. Insufficient waste-collection and recycling systems in most countries also stand in the way of trash to cash concept, said Doug Woodring, an environmental entrepreneur in Hong Kong who is among the organizer of the Plasticity forum(论坛) in Rio.

Rather than breast-beating, the form aims to highlight some of the technologies and ideas out there for collection and reuse. My personal favorite for now is a vacuum cleaner with plastic parts made from plastic waste.

【1】What do the campaigners like to do exactly?

A. To describe plastic waste as potential “gold”.

B. To invite members of the public to their forum.

C. To collect ideas on how to recycle plastic waste.

D. To hold a competition on how to deal with environmental pollution.

【2】The underlined part “trash to cash” most probably means ”.

A. applying modern technology to recycling systems

B. collecting sufficient plastic waste for future use

C. establishing many environmental businesses

D. turning plastic waste into fuel or new products

【3】According to Doug Woodring, the companies that want to reuse plastic waste .

A. have collected enough waste to be used

B. have no practical solutions

C. haven’t reached profitable scale

D. lack technological advances

【4】What can be the best title for the text?

A. Earth Summit = Way Out?

B. Plastic Waste = Great Wealth?

C. Waste Recycling = Green Life?

D. New Technology = Little Waste?

【题目】Sharks have lived in the oceans for over 450 million years, long before dinosaurs appeared. There are now about 360 of sharks, whose size, behavior, and other characteristics differ widely.

Every year, we catch and kill over 100 million sharks, for food and for their fins. Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong . Other sharks are killed for sport and out of fear. Sharks are vulnerable(脆弱的) to overfishing because it most species 10 to 15 years to begin reproducing and they produce only a few offspring.

by movies and popular novels, most people see sharks as people-eating monsters. This is far from the . Every year, a few types of shark injure about 100 people worldwide and kill about 25. Most are by great white sharks, which often feed on sea lions and other marine mammals. They sometimes mistake human swimmers for their normal prey, if they are wearing black wet suits.

If you are a typical ocean-goer, your of being killed by an unprovoked (无缘无故的)attack by a shark are about 1 in 100 million. You are more to be killed by a pig than a shark and thousands of times more likely to get killed when you drive a car.

Sharks help human lives. In addition to providing people with food, they are helping us learn how to cancer, bacteria, and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system wounds to heal quickly without becoming infected, and their blood is being studied in connection with AIDS research.

Sharks are among the few animals in the world that almost get cancer and eye cataracts. Understanding why can help us improve human . Chemicals extracted from shark cartilage have killed cancerous tumors in laboratory animals.

【1】A. species B. classes C. groups D. names

【2】A. greatly B. popularly C. widely D. mostly

【3】A. supermarkets B. restaurants C. offices D. companies

【4】A. spends B. takes C. costs D. uses

【5】A. Impressed B. Moved C. Changed D. Influenced

【6】A. story B. truth C. movie D. problem

【7】A. injuries B. deaths C. attacks D. causes

【8】A. specially B. especially C. mainly D. usually

【9】A. chances B. fears C. lives D. percentages

【10】A. likely B. frequent C. possible D. lucky

【11】A. avoid B. save C. keep D. prevent

【12】A. damage B. destroy C. fight D. ruin

【13】A. advises B. allows C. forces D. forbids

【14】A. never B. seldom C. often D. usually

【15】A. analysis B. research C. study D. health

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网