技巧1：根据同义词或反义词来判断
如：Tom is lazy but his brother is industrious.
该句中but表示转折，就暗示了lazy和industrious是一对反义词，由此可知in dustrious意为刻苦的、勤奋的。
技巧2：根据定义和释义来 推测
如：She is studying g lauc oma，a kind of disease on the eyes.
我们可能猜不出glaucoma的确切 词义，但通过后面的解释可知道glaucoma（青光眼）是一种眼睛疾病。
技巧3：根据常识来推测
如：Water usually boils at 100 centigrade.
众所周知，水的沸点是100摄氏度，由此不难判断出centigrade的意思是摄氏度。
技巧4：运用构词法进行猜测
如：The colors of Hawaii in summer are unforgettable.
forget意为忘记，un为否定前缀，因此unforgettable就是令人难忘之意。
Life on Mar s will be better than that on Earth in many ways. People will have more space. Living in a larg e building with only 10 bedrooms is highly possible. Many people believe that robot will do most of our work, so we have mor e time for our hobbies.
【问题】 Life on Mars will be better than life on the earth because .
A. only a few people will live there
B. there will be more space and less work to do
C. there will be much delicious foo d
D. all students don"t need to do any homework
【解析】由句子People will have more space和robot will do most of our work判断：火星上的生活比地球上的生活要美好，因为人们的工作量少，居住空间大，故本题答案为B
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