Don’t use your cellphone — we are flying at ____ altitude of 10,000 meters and ____average speech is 678km/h.
#8545
A
an; the
B
the; the
C
the; an
D
an; an
推荐题目
People develop ________ preference for a particular style of learning at ________ early age and these preferences affect learning.
#8255
A
a；an
B
a；不填
C
不填； the
D
the；an
—— Where’s Jack? —— I think he’s still in＿＿＿bed, but he might just be in＿＿＿bathroom．
#10213
A
／；／
B
the； the
C
the；／
D
／； the
Johnson had made up his mind to give it up，but on______second thought he determined to try______ third time.
#10092
A
/；a
B
/；/
C
a；a
D
the；a
As is known to us all, _____ tiger is in _____ danger of becoming extinct.
#10225
A
the, a
B
the, 不填
C
a, 不填
D
不填, the
According to the recent reports, one of the animals, _____ crocodile, is in _____ danger of dying out.
#10315
A
the; the
B
the; /
C
/; /
D
/; the