3. The ___called the police after he caught the girl who took a pair of shoes out of his store without paying.
(A) cook
(B) mailman
(C) waiter
(D) shopkeeper

49. Species that create, modify and maintain habitat are known as (A)indicator species. (B)keystone species. (C)dominant species. (D)SLOSS builders. (E)ecosystem engineers.

50. Which of following is NOT true? (A)Many Alu elements are transcribed into RNA. (B)Simple sequence DNA makes up 3% of the human genome. (C)The chimpanzee contains many copies of a retroviral provirus not present in humans. (D)There are more Alu elements in the chimpanzee genome than in the human genome. (E)Copy-number variants (CNVs) are more likely to have phenotypic consequences and to play a role in complex diseases and disorders.

1. Look at the pictures. Which sign should be put on the bench? (A) (B) (C) (D)

2. It is ___for me to go to work by bus. My office is very near the bus stop. (A) convenient (B) dangerous (C) difficult (D) special

4. ___Annie knows fast food is not good for her health, she still eats it. (A) Although (B) Because (C) If (D) When

5. Bill never carries a bag or a wallet when shopping. Every time he has to pay, he takes out money from his ___. (A) blanket (B) drawer (C) mailbox (D) pocket

6. I don’t have ___workers to finish painting the office in two days. Can you find some more to do the job? (A) enough (B) few (C) most (D) total

7. When the kid was trying to pick up the plate, it ___from the table, hit the floor, and broke into pieces. (A) arrived (B) jumped (C) hung (D) dropped

8. Johnny had been talking about going to England, but never got to go. This summer, he ___did it. (A) also (B) even (C) finally (D) only

9. Little Jenny was not sure if the strange old man was still following her, but she was just ___. (A) too angry to talk (B) too difficult to be with (C) too tired to follow (D) too scared to look back