17. Plastic surgery is no longer expensive ____ more people can pay for it.
(A) while
(B) so
(C) because
(D) and

13. The cooperation with international organizations ________ trade, technology transfer, and investment in ____ developing countries. (A) facilitating (B) has facilitated (C) have facilitated (D) to facilitate

14. The conference could have been successful if the keynote speaker ____ late for 40 minutes. (A) hadn't been (B) haven't been (C) hasn't been (D) would be

15. In order to ____ as a supplier, a foreign company must have a local partner or subsidiary to register ____ under local requirements. (A) have considered (B) consider (C) considered (D) be considered

16. It's very noisy outside. I ____ in my lecture, but I can't. (A) try concentrate (B) try concentrating (C) try to concentrate (D) try to concentrating

18. I have been thinking about getting a tattoo of my favorite singer, Taylor Swift； I ____ a picture of her ____ next week. (A) had (B) have (C) have had (D) am going to have

19. Mbah Marijan has a very unusual job. He's the Gatekeeper of Merapi, an active volcano on the island of Java in Indonesia. ____ traditional stories, an ogre named Sapu Jagat lives inside Merapi. (A) According to (B) Based on (C) In addition to (D) Refer to 

20. Bernard Weber wanted to use modern technology to bring the people of the world closer together. He ____ knew that the original Seven Wonders of the Ancient World ____ one person. (A) choose (B) was chosen (C) were chosen (D) were chosen by 

21. What is "off the charts"? (A) The demand of iPhone X (B) The profit of Apple Inc. (C) The new features of the phone (D) The new facial identification software

22. What is NOT a concern about the new iPhone? (A) the offers have been less generous than before (B) users cannot unlock the phone using Face ID (C) slow third-quarter customer upgrades (D) production of the phone was below target 

Question 23 is based on the following reading. (4pts each) This message, including any attachments, is intended only for the use of the Addressee and may contain information that is PRIVILEGED and CONFIDENTIAL. Any dissemination, disclosure, copying or other use of the whole or partial message by persons or entities other than the recipient as indicated in the message is prohibited. If you are not an intended recipient, please kindly notify us and delete the message immediately. Also, Internet communications cannot be guaranteed to be 100% virus-free； we, therefore, shall not be liable for the message if altered, modified, changed or falsified by any third party.23. If you are not the recipient of this message, what can you do? (A) Disclose the message. (B) Copy the message. (C) Disseminate the message. (D) Delete the message.