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【单选题】
观察者O′坐在行驶中的列车中,观察到AB事件同时发生。此时列车向右侧移动。那么观察者O所看到的事件发生顺序是()。
A.
事件A发生在事件B之前。
B.
事件A发生在事件B之后
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举一反三
【单选题】It is essential that all the details in this case ______ first.
A.
is investigated
B.
was investigated
C.
be investigated
D.
shall be investigated
【单选题】One major reason for Germany's high unemployment and the evident weakness of business investment is the nature of the tax system, which tends to discourage both individual effort and investment. Nomin...
A.
criticize Germany's tax system
B.
help companies ease their tax burden
C.
propose ways to reform. the tax system
D.
examine the current corporate tax rates
【单选题】以下关于混悬剂的叙述正确的是( )
A.
分散相粒径一般小于1nm
B.
分散相粒径一般在1-100nm
C.
混悬型药剂分散相微粒的粒径一般在1000μm以上
D.
分散相微粒直径在1nm-20nm
E.
混悬剂属粗分散系
【单选题】The patent officer ______ with my file explained to me that a plant variety is not a/an _______ invention as it is a result of adjusting growth scientifically.
A.
dealing; abrupt
B.
dealt; innocent
C.
deals; practical
D.
dealing; valid
【单选题】It was remarkable of man to invent the wheel because _______.
A.
it led to many other inventions
B.
man had no use for it then
C.
there were no wheels in nature
D.
all of the above
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【单选题】The officials called for an immediate ______ to determine the cause of the accident.
A.
investigation
B.
preparation
C.
recognition
D.
observation
【单选题】The accounting equation shows the relationship among ______.
A.
assets, liabilities and investor's yield
B.
assets, liabilities and owner's equity
C.
capital, liabilities and profits
D.
capital, costs and profits
【单选题】From the passage we get the impression that______.
A.
an invention will not benefit the inventor unless it is reduced to commercial practice
B.
patent experts often recommend patents to others by conducting a search through dead patents
C.
an old patent is more expensive than a new one
D.
products are actually inventions which were made a long time ago
【单选题】We explored the possibility of closer trade links at the conference.
A.
rejected
B.
investigated
C.
proposed
D.
postponed
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