题目内容
【B7】______
查看答案
搜索结果不匹配？点我反馈
更多问题
Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net. 【B1】______ they hope for a good catch of fish. But to their 【B2】______ , a horrible sight meets their still sleepy eyes. Thousands of fish have washed 【B3】______ dead. The cause of this mass destruction？ A red tide!
Red tides are a global 【B4】______ . They have been observed on both the Atlantic and the Pacific coasts of the United States and Canada. They have also 【B5】______ in many other places. Though relatively few people are 【B6】______ them, red tides are not new.
In the Philippines, a red tide was first seen in the province of Bataan in 1908. Since then, red tides have been seen in many other 【B7】______ . A Philippines red tide expert told us that" 【B8】______ the fish kills, the Philippines has documented 1,926 cases of dead shellfish poisoning caused by red tides".
The term "red tide" 【B9】______ the discoloration of water that sometimes occurs in certain areas of the ocean or sea. Although the color is often red, it may also be 【B10】______ of brown or yellow. The World Book Encyclopedia reports that "the discolored areas may range from 【B11】______ a few square yards to more than 2,600 square kilometers".
What causes such discoloration？ Red tides are generally caused by several 【B12】______ of single-celled organisms. These tiny organisms have hair-like projections which they use to 【B13】______ themselves in water. There are about 2,000 varieties of these organisms, 30 of which carry poisonous 【B14】______ . These minute organisms usually stay in warm waters with high content of salt.
A red tide occurs when there is a sudden and rapid 【B15】______ of these organisms. The concentration of these organisms may 【B16】______ to 50,000,000 per quart of water! Although scientists do not fully understand why this happens. It is known that these organisms 【B17】______ when certain conditions simultaneously affect the water. These include abnormal weather, 【B18】______ temperatures, an oversupply of nutrients in the water, a generous 【B19】______ sunlight, and favorable water currents. When a heavy rainfall occurs, minerals and other nutrients are sometimes washed 【B20】______ the land into coastal waters. These nutrients can contribute to the breeding of the organisms. The result？ Red tides!
【B1】______
It is implied in the passage that Nike and Coca-cola ______
【B11】______
Although there are highly professional criminals involved in car theft, almost 90 percent of car crime is committed by the opportunist. Amateur thieves are aided by our carelessness. When the Automobile Association (AA) engineers surveyed one town centre car park last year, 10 percent of cars checked were unlocked, a figure backed up by a Home Office national survey that found 12 percent of drivers sometimes left their cars unlocked.
The vehicles are sitting in petrol stations while drivers pay for their fuel. The AA has discovered that cars are left unattended for an average of three minutes and sometimes much longer as drivers buy drinks, cigarettes and other consumer items and then pay at the counter. With payment by credit card more and more common, it is not unusual for a driver to be out of his car as long as six minutes providing the car thief with a golden opportunity.
In an exclusive AA survey, carried out at a busy garage on a main road out of London, 300 motorists were questioned over three days of the holiday period. 24 percent admitted that they "always" or "sometimes" leave the keys in the car. This means that nationwide, a million cars daily become easy targets for the opportunist thief.
The AA recommends locking up whenever you leave the car--and for however short a period. A partially open sunroof or window is a further come-on to thieves.
Leaving valuables in view is an invitation to the criminal. A Manchester probationary (假释期) service research project, which interviewed almost 100 car thieves last year, found many would investigate a coat thrown on a seat. Never leave any documents showing your home address in the car. If you have a garage, use it and lock it--a garaged car is at substantially less risk.
There are many other traps to avoid. The Home Office has found little awareness among drivers about safe parking. Most motorists questioned made no efforts to avoid parking in quiet spots away from street lights just the places thieves love. The AA advises drivers to park in places with people around m thieves do not like audiences.
The passage seems to imply that payment by credit card ______
微信支付 
支付宝支付