78 According to the passage, who is NOT likely involved in the volunteer team?
(A) University students.
(B) Teachers at Liuqiu Junior High School.
(C) Staff from a non-profit organization.
(D) Tour managers from other countries.

74 Which feature are green products known for? (A) Cheap. (B) Ecological. (C) Planetary. (D) Mechanical.

75 What is one of the causes that raise people’s environmental concerns? (A) Gender inequality. (B) Global poverty. (C) Global warming. (D) Regional war.

76 What is the passage mainly about? (A) A beautiful country. (B) Environmental protection. (C) Wild animals. (D) Hardworking residents.

77 Why do visitors come to this island? (A) To join beach clean-ups. (B) To observe the economic growth. (C) To paint the houses. (D) To enjoy water activities.

79 According to the passage, when do sea turtles likely lay eggs? (A) At noon. (B) In the early afternoon. (C) At midnight. (D) At 10 in the morning.

80 According to the passage, how to keep the island green effectively? (A) Promote ecotourism. (B) Produce more debris to create the art wall. (C) Introduce more friends to visit this island. (D) Make food to feed sea turtles.

1. What is the correct sequence for the following structures in transmitting an electrical current of a typical motor neuron?1. cell body; 2. axon; 3. axon hillock; 4.dendrites; 5.synaptic terminals (A)4, 1, 3, 2, 5 (B) 5,4,1,3, 2 (C)4,3,1,2,5 (D)5,4,1,2,3 (E) 4,1, 2, 3, 5

2. Which is the correct description regarding fertilization in plants? (A) Fertilization involves multicellular organisms. (B) Fertilization is initiated once pollens are on the stigma. (C) Fertilization requires one fusion of cells. (D) Fertilization does not require specific recognition of mother cells. (E) Fertilization results in a change in ploidy.

3. A cell secretes a signal molecule that affects neighboring cells. What is the type of signaling?(A) Hormonal signaling. (B)Paracrine signaling. (C) Synaptic signaling. (D) Autocrine signaling. (E) Endocrine signaling.

4. What is the mechanism by which testosterone functions inside a cell? (A) It acts as a signal receptor that activates tyrosine kinases. (B) It binds with a receptor protein that enters the nucleus and activates the expression of specific genes. (C) It cooperates with a membrane receptor to response to drug treatment. (D) It acts as a steroid signal receptor that activates ion channel proteins in the plasma membrane. (E) It coordinates a phosphorylation cascade that reduces spermatogenesis.