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【单选题】
Why are marine organisms good candidates for fossilization?A.
they have more fleshy structures than land organisms.
B.
It is likely that they will be buried rapidly
C.
The water environment speeds the decay caused by bacteria.
D.
it takes longer for them to be preserved.
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皮皮学刷刷变学霸
举一反三
【单选题】— Who _______ the beautiful villa now? — Mr Turnner. [ ]
A.
Owns
B.
is owning
C.
has been owning
D.
owned
【单选题】关于质粒的特点,错误的是
A.
游离或整合在细菌染色体上
B.
携带细菌生命活动必需的基因
C.
可赋予宿主菌某些特定生物学性状
D.
可自行丢失
E.
可通过人工处理消除
【单选题】Which of the following is not true about the Villa del Monte?
A.
It has a large sitting room on the ground floor and two beautifully decorated bedrooms upstairs.
B.
It is a little far away from the town.
C.
It is a two - story house with a garden and a swimming pool.
D.
It affords a beautiful view out over the sea toward Naples.
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