11.　　 One explanation is that women’s sense of smell developed long ago, and is l________ to recognizing the smell of babies.

10.　　 During the experiment, volunteers were asked to sniff pleasant smells such as vanilla, and u_____________ smells such as durians.

9.　　　　 The possibility that pleasant smells might r_________ pain has recently been suggested by new research.

8.　　　　 If anyone knows this kind man, please contact me through the newspaper so I can thank him p_____________.

7.　　　　 You see, a fog this bad is r_________. It gives me the c___________ to pay back the help that people give me when it’s sunny.

6.　　　　 Polly found herself s___________ (盯著看) up at a man standing with his hand r_________(靠)on her arm.

5.　　　　 A few seconds later, a hand reached out and t___________ her arm.

4.　　　　 She could feel her heart b__________ with fear.

3.　　　　 ... but by the time she r__________ the corner of the street, the footsteps were gone.

2.　　　　 When Polly got to the station entrance, it was d___________.