One day， _____，Newton saw an apple fall from a tree.
A: to sum up
B: what’s more
C: it is said
D: in addition
A: to sum up
B: what’s more
C: it is said
D: in addition
举一反三
- Is this __________ apple tree? No, it is __________ orange tree.
- —Is this ＿＿apple tree?—，it is ＿＿orange tree. A: an/the B: the/the C: an/an D: the/an
- This is ______ apple tree, and that is____ orange tree. A: a/ an B: a/ a C: an/an D: an/a
- 中国大学MOOC: —Is this ____________ (an / the ) apple tree? —No, it is ____________(an / the ) orange tree.
- 5) Is this __________ apple tree? No, it is __________ orange tree. A: A) an / the B: B) the / the C: C) an / an D: D) the / an