A.Brazil.
B.Colombia.
C.Ethiopia.
D.Egypt.
A.they were so dependent on potatoes that they refused to eat anything else.
B.they were forced to leave their homeland and move to america.
C.the weather conditions in ireland were not suitable for growing potatoes.
D.the potato harvest was bad.
开始考试点击查看答案A.some cocoa trees.
B.some chocolate drinks.
C.some shops.
D.some south american indians.
开始考试点击查看答案A.Food
B.Clothing
C.Ideology.
D.Languag
开始考试点击查看答案A.Right
B.Wrong
C.Not mentioned
开始考试点击查看答案A.Right
B.Wrong
C.Not mentioned
开始考试点击查看答案A.One third of the world’s population drinks coffee.
B.Coffee is native to Colombia.
C.Coffee can keep one awake.
D.Coffee drinks were first made by Arabs.
开始考试点击查看答案A.A not very rough storm.
B.Unexpected disturbed air.
C.A kind of visible storm.
D.A storm over mountain ridges.
开始考试点击查看答案A.causing a lot of damage to the plane.
B.throwing its passengers out of the cabin.
C.resulting in heavy casualties.
D.forcing the pilot to make an emergency landing.
开始考试点击查看答案A.the speed of the plane.
B.the speed of the light.
C.the number of particles in the air.
D.the changes of the particles’ speed.
开始考试点击查看答案A.the lidar detector can successfully forecast turbulence.
B.researchers are not sure about the effectiveness of the lidar detector.
C.passenger planes will be used in further experiments.
D.no more test flights are needed.
开始考试点击查看答案注册安全工程师注册安全工程师安全生产技术2013年安全工程师
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