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【单选题】
为探讨血清胆固醇水平对冠心病的影响,根据血清胆固醇水平将 1000 名 35 岁以上男性人群分为两组:一组胆固醇水平高于临界值,为暴露组,共 500 人;其余 500 人血清胆固醇在正常值范围内,作为对照组。随访 5 年,暴露组有 45 人发病,对照组有 10 人发病。该研究中,胆固醇水平高于临界值者患冠心病的相对危险度是A.
2.0
B.
45.0
C.
4.5
D.
10.0
E.
1.0
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【单选题】不少职校生在校学习期间,积极参与学校组织的志愿者公益实践活动,他们走进社区、乡村,在清理环境垃圾的同时,向居民、村民宣传环保的理念和重要性。作为职校生,积极参与社会公益活动,可以使我们
A.
获得更多的荣誉
B.
得到别人的赞许
C.
找份更好的工作
D.
承担社会责任
【单选题】If a liquidity trap does exist, then ______ policy will not be effective in increasing income when interest rates reach very ______ levels.
A.
monetary; high
B.
monetary; low
C.
fiscal; high
D.
fiscal; low
【简答题】若行列式中每一列的元素之和均为零，是否可以断言该行列式的值为零?
【单选题】LM schedule shows various combinations of the level of income and interest rate when?
A.
Money demand = Money supply
B.
Level of income
C.
Money demand
D.
Level of income = Interest rate 判断题
【单选题】When real income falls, the demand curve for money shifts to the _____ and the interest rate _____.
A.
left; rises
B.
left; falls
C.
right; rises
D.
right; fall
【单选题】What happens when interest rates rise?
A.
Discretionary income increases
B.
The demand for discretionary goods increases
C.
Discretionary income is unchanged
D.
The demand for discretionary goods decreases
E.
Discretionary income increases and the demand for discretionary goods decreases
【简答题】总分类账一般采用订本账，明细分类账一般采用活页账。（ ）
【单选题】When real income ________, the demand curve for money shifts to the ________ and the interest rate ________, everything else held constant.
A.
falls; right; rises
B.
rises; right; rises
C.
falls; left; rises
D.
rises; left; rises
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