I hear ___ walking on the moon is more difficult.
A: if
B: that
C: s o
D: o r
A: if
B: that
C: s o
D: o r
举一反三
- I hear______walking on the moon is more difficult. A: if B: that C: so D: whether
- 4 Complete the words. 25ba s t r a i g h t straight 1 p o i n _ _ _ ____ 2 L - s h a _ _ _ ____ 3 c u r _ _ _ ____ 4 r e c t a n _ _ _ ____ 5 v e r t i _ _ _ ____ 6 c i r c u _ _ _ ____ 7 r o _ _ _ ____ 8 c i r _ _ _ ____ 9 t r i a n _ _ _ ____ 10 h o r i z o n _ _ _ ____ 11 s q u _ _ _ ____ 12 p a r a l _ _ _ ____ 13 d i a m _ _ _ ____ 14 s _ _ _ - s h a p e d ____
- 电压源与电流源等效变换的条件是（）。 A: I<;sub>;S<;/sub>;=E<;sub>;S<;/sub>;/R<;sub>;O<;/sub>; B: E<;sub>;S<;/sub>;=R<;sub>;S<;/sub>;I<;sub>;S<;/sub>; C: R<;sub>;O<;/sub>;=0 D: R<;sub>;O<;/sub>;=R<;sub>;S<;/sub>;
- Walking on the moon is________walking on the earth. A: not so easy as B: more easy than C: as easily as D: more easier than
- 联结学习理论认为，学习的实质就是建立联结，联结的公式为（） A: S—O—R B: R—O—S C: R—S D: S—R