Which of the following statements is true？
A．Scientists have solved the mystery about the fish killer.
B．More studies need to be made about the fish killer.
C．It is proved that the algae are reducing fish populations.
D．Humans have already been affected by the toxin.

The phrase "product of greater value" underlined in Paragraph 4 refers to______.
A．lawsuit plaintiffs
B．theoretical damages
C．light cigarettes
D．health advantages

Why does the man go to see his professor？
A．To borrow some books for his project
B．To hand in the first book report
C．To ask about the professor's requirements
D．To talk about literary movements

The phrase "a global settlement" underlined in Paragraph 3 refers to______.
A．smokers are found everywhere on the globe
B．smokers are to settle down around the world
C．people around the earth smoke light cigarettes
D．a final court decision that applies internationally

Researchers think that it is______.
A．safe to eat fresh fish
B．dangerous to get close to the algae
C．safe to be near the algae
D．dangerous to expose the algae

The word "prompted" underlined in Paragraph 3 means______.
A．stimulated
B．attracted
C．annoyed
D．shocked