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【单选题】
MM Proposition I with taxes is based on the concept that:A.
the optimal capital structure is the one that is totally financed with equity.
B.
the capital structure of the firm does not matter because investors can use homemade leverage.
C.
the firm is better off with debt based on the weighted average cost of capital.
D.
the value of the firm increases as total debt increases because of the interest tax shield.
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【单选题】What is the limitation of the rubidium method?
A.
Rubidium is everywhere in the rock.
B.
Strontium atoms are hard to detect at the normal temperature.
C.
It cannot date sediments.
D.
It is time-consuming.
【简答题】［A］ scarce ［B］ little ［C］ rare ［D］ poor
【单选题】Water is considered a scarce good because:
A.
. scarce goods are less expensive.
B.
. not enough of it is available for all needs.
C.
. not enough of it is available for all needs and because it is less expensive.
D.
. it does not have any uses.
【单选题】As a result of the birth of Dolly and an adult ewe,______.
A.
American scientists were strongly criticized for human cloning
B.
government-funded researches were banned from controversial topics
C.
American universities started to conduct similar research overseas
D.
the IVF industry is starting to disappear in the U. S.
【单选题】It is of vital importance that a person ______ at least both physically and mentally strong to be an astronaut(宇航员).
A.
shall be
B.
be
C.
are to be
D.
must be
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