Tim first mether_______a summer evening.
A.on
B.in
C.at
D./
A.on
B.in
C.at
D./
It was the first time that such a had to be taken at a British nuclear power station.
A) presentation B) preparation C) prediction D) precaution
Before the first non-stop flight made in 1949, it ________ necessary for all planes to land for refueling.
A) would be B) has been
C) had been D) would have been
A.the Song Dynasty
B.the Qin Dynasty
C.the Ming Dynasty
D.the Qing Dynasty
m of pollution in the country, but halfway in her speech, she suddenly _________ to another subject.
A) committed B) switched
C) favoured D) transmitted
ination so that she could be sure of passing it on her first ____________.
A) intention B) attempt
C) purpose D) desire
A.circular note
B.check
C.coupon
D.bond
It was the first time that such a ______had to be taken at a British nuclear power station.
A) presentation B) precaution C) preparation D) prediction v