A) it can stand harsh weather
B) it can be grown together with other plants C) it doesn't need any chemical fertilizer D) it will not erode in the forest
正确答案： B 38.
Many coffee farmers shifted to growing coffee plants under direct sun in the 1970s ______. A) out of the fear of the spread of coffee leaf rust B) because it was more profitable
C) as new varieties of coffee plants were developed D) to decrease chemical inputs
正确答案： A 39.
Coffee leaf rust ______.
A) was a great hit to the coffee industry
B) cannot be eliminated by chemical fertilizers
C) didn't constitute a big problem for Latin America D) ended the growing history of shade coffee
正确答案： C 40.
Many coffee farmers turned to sun coffee ______. A) as a result of the widespread of coffee leaf rust B) because it brought about higher profit C) at the request of USAID
D) with the development of technology
正确答案： B
Part III Vocabulary and Structure ( 10 minutes )
Directions: There are a number of incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE that best completes the sentence.
41.
They are currently _________ in lengthy trade negotiations. A) engaged B) busy C) obliged D) occupied
正确答案： A 42.
At the first _______ of twelve all the workers in the factory stopped for lunch. A) strike B) bell C) stroke D) hit
正确答案： C 43.
A solar day is the length of time _______ the Earth to revolve once around the Sun. A) takes B) takes it C) it takes D) one takes
正确答案： C 44.
He obviously displays a great ______ for some of your poems. A) consent B) admiration C) respect D) pleasure
正确答案： B 45.
The teachers ______ themselves with planning out the work of the coming semester. A) employed B) involved C) occupied D) engaged
正确答案： C 46.
I prefer to be a _____ because I don't like to operate. A) doctor B) surgeon C) physician D) specialist
正确答案： C 47.
The _____ of tests in the United States institutions can be a new and frightening experience for many foreign students. A) frequency B) presence C) efficiency D) confidence
正确答案： A 48.
As it had not rained for several months, there was a _____ of water. A) waste B) drop C) loss
D) shortage
正确答案： D 49.
Despite their good service, most inns are less costly than hotels of _____ standards. A) equivalent B) alike C) uniform D) likely
正确答案： A 50.
The mechanic said that the work would be done quickly, but he would not _____ himself to a specific time. A) admit
B) permit C) commit D) submit
正确答案： C 51.
The war may _____, but victory is sure to belong to the peace-loving people. A) drag out B) drag on C) drag up D) drag along
正确答案： B 52.
_______ to the Independent War, the United States was an English colony. A) Before B) Prior C) Following D) Preceding
正确答案： B 53.
She continued to type as fast as ever, though her thumb was badly swollen ______ a hurt. A) in B) for C) with D) from
正确答案： D 54.
She looks to be ______ 40, but as a matter of fact, she is 50. A) older than
B) in the neighbourhood of C) at age of
D) approximately about
正确答案： B 55.
The crust of the Earth was thin here, and other conditions appeared ______ for drilling.
