The word "which" in paragraph 3 refers to ____.
A.activities of an overpopulated society's industry
B.the waste products dumped into our environment
C.activities of surplus human population
D.serious environmental pollution

According to the passage, to save our planet, biologists should work _______ .
A.harder and harder
B.accurately and objectively
C.on social and political purposes
D.with other social scientists

Which of the following is closest in meaning to the word "ramifications" in paragraph 4?
A.useful experiments
B.effective techniques
C.harmful consequences
D.latest developments

Education in early times was mostly aimed at ____.
A.teaching skills
B.learning to live
C.learning new lifestyles
D.imparting survival skills

The word "informally" in this context mostly refers to an education occurring____.
A.in classrooms
B.outside the school
C.in a department
D.ability

When the concept of universal primary education was introduced, education____.
A.was given free to all
B.was intended for all the sexes
C.focused on imparting skills
D.was intended to leave out female learners

The word "espouse" is contextually closest in meaning to "____".
A.to introduce
B.to put off
C.to give
D.to induce

The word "tables" is closest in meaning to "____".
A.shapes
B.meeting tables
C.personalities
D.figures

the children realized that they were by themselves in the dark, they became really frightening
A.by themselves
B.the dark
C.became
D.frightening

It is a good idea to be careful in buying or purchasing magazines from salespersons who may come to your door.
A.It
B.to be
C.buying or purchasing
D.who