Greenhouse gases are the gases absorbs and emits radiant energy within the thermal infrared range, which cause the .
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【单选题】Which of theunderline expressions isthe hedging of the following sentences.For example, it may be necessary for the spider to leave the branch on which it is standing, climb up the stem, and walk out ...
A.
For example, it may be necessary for the spider to leave the branch on which it is standing, climb up the stem, and walk out along another branch.
B.
For example , it may be necessary for the spider to leave the branch on which it is standing, climb up the stem, and walk out along another branch.
C.
For example, it may be necessary for the spider to leave the branch on which it is standing , climb up the stem, and walk out along another branch.
D.
For example, it may be necessary for the spider to leave the branch on which it is standing, climb up the stem, and walk out along another branch.