A indispensible B useful C ineffective D available

A clear the vision B remedy snow-blindness C ease the irritation D loosen the muscles

A concentrating to the solid white terrain B searching for something to look at in snow-covered terrain C providing the eyes with something to focus on D covering the eyeballs with fluid

A give the men behind something to see B beautify the landscape C warm themselves in the cold D prevent the men behind from losing their way

A Snow-Blindness and How to Overcome It B Nature's Cure for Snow Blindness C Soldiers in the Snow D Snow Vision

A subject learning goals B general development goals C subject learning goals and general development goals D emotional goals

A Managerial mode． B Permissive mode． C Arbitrary mode． D Democratic mode．

A Observing the activity． B Evaluating the activity． C Monitoring the activity． D Controlling the activity．

A Writing． B Oral test． C Translation． D Cloze．

A the United States is a wealthy country although poverty and crime exist there B crime has become a serious problem in the United States, although it is said to be a prosperous one C despite the fact that crimes have been increasing rapidly in the United States, it is a country of prosperity D in spite of stories about poverty and crime in the United States, it is prospering at an increasing rate