【简答题】fatality,s upervisors, scaffold, counterproductive, contractor, take place, site safety, rigger, are dedicated to, crane, Construction safety is a global issue in that it is a concern wherever constru...
【单选题】The Marijuana Tax Act of 1937 rendered marijuana illegal and in 1941 it was deleted from the U.S. Pharmacopoeia , an official compendium of drugs,
A.
( ■ ) In addition the Controlled Substances Act ( CSA) of 1970 classified marijuana as one of the most dangerous drugs and banned to be legally cultivated in the United States.
B.
( ■ ) Drugs which have a high potential for abuse is classified as Schedule l drugs and cannot be used with medical purposes.
C.
( ■ ) Marijuana, heroin, opiates and hallucinogens belong here.
【简答题】根据句意及首字母的提示,补全单词 1. One of the most erous sports in the world is mountain c_________. 2. There were no man-made s_________ as big as the Great Wall. 3. The train was traveling at an ordinary s____...