Question

Though silk ________ soft and cool, it's difficult to be taken care of.

1. A.
   is feeling
2. B.
   feels
3. C.
   has felt
4. D.
   is felt

Answer 1

B
点拨：题意为“虽然蚕丝摸起来又软又凉，但是……”，feel起系动词作用，A，C和D项的时态和语态不符。