There is some pens and a book on the desk.
The number of the visitors has decreased this year.
A number of ancient buildings is destroyed in the war.
Neither of us have been abroad.
第1题：
● Your team has prepared a CPM schedule for your review. You notice that one node has six inputs (including two dummy activities) and four outputs (which include one dummy activity). Select the correct statement from the following:
A This is a valid representation if the logic is correct.
B This is invalid because a node can have a maximum of one dummy input representation if the logic is correct.
C This is invalid because nodes cannot have both dummy inputs and dummy outputs.
D This is a invalid because the number of outputs must equal the number of inputs.
E This is invalid because a maximum of two inputs and two outputs are allowed using the critical path method.
第2题：
Which of the following statements is NOT mentioned in the passage?
A. Malaria is under attack in a number of countries.
B. Some types of mosquitoes have become resistant to the current sprays.
C. New poisons have been put into wide use with the new science.
D. One of human's challenges is to win the campaigns against mosquitoes.
第3题：
Your team has prepared a CPM schedule for your review. You notice that one node has six inputs (including two dummy activities) and four outputs (which include one dummy activity). Select the correct statement from the following:
A.This is a valid representation if the logic is correct.
B.This is invalid because a node can have a maximum of one dummy input representation if the logic is correct.
C.This is invalid because nodes cannot have both dummy inputs and dummy outputs.
D.This is a invalid because the number of outputs must equal the number of inputs.
E.This is invalid because a maximum of two inputs and two outputs are allowed using the critical path method.
第4题：
第5题：
第6题：
St. James has been put back to the state road map due to____
A the efforts of five women
B the efforts of the Center for Rural Affairs
C the vendors in the local place
D the unexpected number of visitors
第7题：
A number of boys()absent some time during the term.
A. have been
B. has been
C. will
参考答案：A
第8题：
The number of foreign students attending Chinese universities ________ rising steadily since1990.
A. is B. are C. has been D. have been
第9题：
第10题：
Which of the following livestock has the biggest number in the UK?（）
ABeef cattle.
BDairy cattle
CChicken.
DSheep.