The government run command post in Tunis is staffed around the clock by military personnel, meteorologists and civilians. On the wall are maps, crisscrossed with brightly colors arrows that painstakingly track the fearsome path of the enemy.
What kind of invader gives rise to such high-level monitoring? Not man, not beast, but the lowly desert locust.(蝗虫) In recent months, billions of the 3-inch-long winged warriors have descended on Algeria, Libya, Morocco and Tunisia, blackening the sky and eating up crops and vegetation. The insect invasion, the worst in 30 years, is already creating great destruction in the Middle East and is now treating southern Europe. The current crisis began in late 1985 near the Red Sea. Unusually rainy weather moistened the sands of the Sudan, making them ideal breeding grounds for the locust, which lays its eggs in the earth. The insect onslaught threatens to create yet another African famine. Each locust can eat its weight in vegetation every 24 hours. A good-size swarm of 50 billion insects eats up 100,000 tons of grass, trees and crops in a single night.
All ﹩150 million may be needed this year. The U.S. has provided two spraying planes and about 50,000 gal. of pesticide. The European Community has donated ﹩3.8 million in aid and the Soviet Union, Canada, Japan and China have provided chemical-spraying aircraft to help wipe out the pests. But relief efforts are hampered by the relative mildness of approved pesticides, which quickly lose their deadly punch and require frequent replications. The most effective locust killer dieldrin has been linked to cancer and is banned by many Western countries and some of the affected African nations. More then 5 million acres have been dusted with locust-killing chemicals; another 5 million will be treated by the end of June.
On May 30, representatives of Tunisia, Algeria, Libya, Morocco and Mauritania will meet in Algiers to discuss tactics to wipe out the ravenous swarms. The move is an important step, but whatever plan is devised, the locust plague promised to get worse before the insects can be brought under control.
1.The main idea of the first sentence in the passage is that __
A.the command post is stationed with people all the time.
B.the command post is crowed with people all the time.
C.there are clocks around the command post.
D.the clock in the command post is taken care of by the staff.
2.The favorable breeding ground for the locust is ___.
A.rich soil.
B.wet land
C.paces covered crops and vegetation
D.the Red Sea
3.People are alert at the threat of the locust because ___.
A.the insects are likely to create another African famine.
B.the insects may blacked the sky.
C.the number of the insects increases drastically.
D.the insects are gathering and moving in great speed.
4.Which of the following is true?
A.Once the pesticides are used, locust will die immediately.
B.Relief efforts are proved most fruitful due to the effectiveness of certain pesticides.
C.Dieldrin, the most effective locust killer, has been widely accepted in many countries.
D.Over 10 million acres of affected area will have been treated with locust-killing chemicals by the end of June.
5.The purpose for affected nations to meet in Algiers on May 30 is ___.
A.to devise antilocust plans.
B.to wipe out the swarms in two years.
C.to call out for additional financial aid from other nations.
D.to bring the insects under control before the plague gets worse.
参考答案:B B A D A
吃货过夏天:9种最健康的夏日食物
社交课堂:如何原谅伤害你的人?
行走的力量:趁年轻多去旅行吧!
屌丝男神器:日本推“女性膝盖枕头”
日本隐形军队揭秘
Gmail新功能令零售商不安
英议员称出租车应低价搭载衣着暴露女性以保证其安全
奶奶婚礼犯糊涂 错拿鸡尾酒泼新娘
泰国甜点工厂成为羽球冠军生产线
珍贵一刻:新郎24小时河底寻回婚戒
《卫报》记者刊发斯诺登爆料 同性伴侣伦敦机场被拘9小时
不要将小问题变成大麻烦
教你度过一个吃得好,过得爽,花得少的夏天
如何让自己忙的更有效率
反潮流!奥地利人提议把“现金支付权”写入宪法
生活中让你微笑的30件美好小事
美国一大学为教师购置防弹书写板
悲催!西班牙47层大楼忘装电梯
啃老族该如何营造和谐家庭氛围
四面楚歌 苹果日子将更加难过
晚睡强迫症: 你睡不着的8个原因
水瓶灯泡:塑料瓶装水照亮你的家
长知识了!全球各国的餐桌礼仪
北京写字楼供应告急
五种方式帮你延缓衰老 永葆青春
米歇尔奥巴马 美国准备好迎接女总统
体坛英语资讯:Kenya soccer captain sues firm for use of his image on Twitter
高妹伤不起:高妹最讨厌听的16句话
香奈儿诞辰130年:魅力女人炼成
清华毕业生当城管
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |