Sandstorms ________.
A. do no harm to machinery
B. have effects only on the eyes
C. never lasts more than one hour
D. have bad effects on both human beings and machinery
Giải bởi qa.haylamdo.com
A. không gây hại cho máy móc.
B. có ảnh hưởng đến mắt.
C. không bao giờ kéo dài hơn 1 giờ.
D. có tác động xấu đến cả con người và máy móc.
Thông tin: Humans may also have to adapt to sandstorms in some deserts, not just in their adverse effects on respiratory systems and eyes, but also in their potentially harmful effects on equipment such as filters, vehicles, and communication equipment. Sandstorms can last for hours, sometimes even days.
Tạm dịch: Con người cũng có thể phải thích nghi với bão cát trên sa mạc, không chỉ phải thích nghi với ảnh hưởng nghiêm trọng của nó đến hệ hô hấp và mắt mà còn ảnh hưởng có hại đến các thiết bị máy móc như bộ lọc, phương tiện di chuyển và thiết bị liên lạc. Bão cát có thể kéo dài trong vòng vài giờ, thậm chí có khi tính bằng ngày.
Đáp án cần chọn là: D
I am afraid that the company is in deep trouble. ________, we are going to make some people redundant.
Camels have one or two humps used ________ storing water and food.
To ________ a desert is a dangerous activity which requires careful preparation for risks.
The ________ of a cliff, or mountain, is a vertical surface or side of it
Camels were often used _______ transportation by people of the desert.
Read the following passage and choose the best answer for each blank.
The Middle East and North Africa are one of the driest regions on earth. Nearly two-thirds of the region is desert. The Sahara Desert of northern Africa is the largest desert in the world. Desert air (26)____ little moisture, so few clouds form over the land. Without clouds to block the sun, temperatures may reach as (27)____ as 125°F during the day. At night, without the clouds to contain the heat, the temperature can fall to as low as 125°F. Extreme temperatures (28)____ with little rainfall make desert life difficult for people, plants, and animals. (29)____, some life forms have adapted to even the most severe desert (30) ____, Camels are able to survive long periods without food or water. Many desert plants have long, shallow (31)____ systems. This allows the plants to reach out to collect water over great distances. Other desert plants have taproots. Taproots grow very deep (32)____ they can tap sources of underground water. Plant life in the desert is usually spread out over great distances. This is (33)____ deserts are often described as barren, or lifeless.
When many people think of a desert they often think of endless miles of hot sand, but a desert does not have to be hot or sandy. Most of the land of the Middle East and North Africa is hot, dry desert land, (34)____ some deserts look very different. Most of Antarctica is a desert but there is no sand on the continent and the climate of Antarctica is (35)____ coldest on earth.
Desert air (26) ____ little moisture, so few clouds form over the land.
________ is the process by which a piece of land becomes dry, empty, and unsuitable for growing trees or crops on.
________ Sahara of ________ Africa is the world's largest desert.
