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【单选题】
乙酸橙花酯是一种食用香料，结构如图所示。下列关于该有机物的说法有如下几种： ①该有机物有一种同分异构体属于酚类； ②该有机物属于酯类； ③该有机物不能发生反应； ④该有机物的分子式为C 11 H 18 O 2 ； ⑤1mol该有机物最多能与1mol NaOH反应。其中正确的是A.
①③④
B.
②③⑤
C.
①④⑤
D.
①③⑤
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【单选题】They arrived _____ Shanghai _______ the evening of April 10 th .
A.
at, at
B.
in, in
C.
in, on
D.
at, on
【单选题】It was July 24th when he arrived in London, ______ the 30th Olympic Games would be declared open 3 days later.
A.
that
B.
how
C.
where
D.
Who
【单选题】Today everyone arrived earlier than _______.
A.
expecting
B.
having expecting
C.
to expect
D.
expected
【单选题】—When did Cathy China? —She here on June, 26th. [ ]
A.
arrived in, arrived
B.
arrived at, got to
C.
reach to, got
D.
get to, arrived
【单选题】Having arrived at the station, _____.
A.
it was found that the train had left
B.
the train had left
C.
the train was found left
D.
he found that the train had left
【单选题】Our school is having a sports meeting. Someone ______ here already.
A.
arrived
B.
have arrived
C.
has arrived
【单选题】Having arrived at the station, _____.
A.
the train was found left
B.
he found that the train had left
C.
it was found that the train had left
D.
the train had left
【单选题】______ early for his date, Mark spent time reading the newspaper．
A.
Arriving
B.
Having arrived
C.
Arrived
D.
To arrive
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