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

The text is about ________.
A.troubles that human beings have to face in a desert
B.desert storms and desert inhabitants
C.hot deserts and cold deserts in the United States
D.desert hospitality and environment

Which is not a problem for an unprepared man in a hot desert?
A.sandstorm
B.loss of water
C.irrigation
D.heatstroke

Error Identification.
Most (A) plants in deserts have adapted (B) to sporadic rainfalls (C) in a desert environments (D).
A.Most
B.have adapted
C.rainfalls
D.environments

Error Identification.
The Nile River, the Colorado River, but (A) the Yellow River flow through (B) deserts to deliver (C) their sediments to the sea (D).
A.but
B.through
C.to deliver
D.to the sea

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
I want to work as an interpreter in the future, ________, I am studying Russian at university.
A.but
B.so
C.however
D.therefore

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
________ Sahara of ________ Africa is the world's largest desert.
A.Ø/ the
B.The/ Ø
C.A/ an
D.The/ an

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
The Simpson Desert was named _______ Mr. Simpson, President of the South Australian Branch of the Royal Geographical Society of Australia.
A.with
B.at
C.after
D.for

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
Thanks to pictures taken by satellites, deserts have not ________ a mystery in our time.
A.hidden
B.intended
C.remained
D.attained

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
The Sahara contains complex linear dunes that are ________ by almost 6 kilometers.
A.developed
B.separated
C.lay
D.located