20. Some private investors are not fully__________ of the benefits that environmental investments can yield to them.
(A) cognitive
(B) cognizant
(C) conspicuous
(D) consistent
(E) contradictory 

16. Paris is a city of gourmet with hundreds of restaurants which will surely __________your appetite for delicious food. (A) penetrate (B) nurture (C) circumvent (D) satiate (E) quench

17. She tried to__________ my confidence by telling me that I had a special talent. (A) validate (B) sanction (C) garnish (D) expedite (E) bolster

18. The__________ plan would involve investment in high-tech manufacturing, clean energy, and transportation systems designed for electric vehicles. (A) cyberstructure (B) infrastructure (C) microstructure (D) neurostructure (E) paleostructure

19. Loss of memory is a natural __________of old age. (A) concomitant (B) dominant (C) indignant (D) repugnant (E) stagnant

A. Please choose the best answer to complete each sentence.21. If she__________ carefully, she would not have had that terrible accident. (A) drives (B) drove (C) has driven (D) had driven (E) would have driven

22. The Winged Victory statue lacks a head,__________ it is considered one of the world’s most beautiful sculptures. (A) nevertheless (B) still (C) despite (D) yet (E) therefore

23. Not only __________in the field of psychology, but animal behavior is explored as well. (A) human behavior (B) is studied human behavior (C) is human behavior studied (D) human behavior is studied (E) human behavior is studying

24. __________of vision or smell might, without realizing it, affect who we choose as friends has been advised. (A) Our sense that (B) That our sense (C) Sense (D) For our sense (E) Because our sense

25. His friends recommended__________ the course. (A) John has to take (B) that John takes (C) that John take (D) that John to take (E) John taking 

B. For each sentence, please choose ONE underlined part that contains ungrammatical use of English.26. Before the pandemic grounded most flights, commercial aviation accounted for about 2.5% of global emissions of carbon dioxide. It sounds like it is a small proportion of the whole, but it is more than those of Germany, and this is not the whole story. (A)most flights,(B)accounted for(C)it is a small proportion(D)those of Germany(E) the whole story