【单选题】Although many people would not believe it, the mosquito is actually the most dangerous animal in Africa. While the bite of the black mamba is invariably lethal when untreated, this dreaded snake kills...
A.
Could a person survive an attack by a black mamba if that person received prompt medical attention?
B.
What criteria are used to determine which animal is the 'most dangerous' animal?
C.
Could the incidence of mosquito bites be decreased through the judicious use of pesticides and insect repellent?
D.
Does malaria kill more people per year in Africa than tuberculosis?
E.
How does the percentage of people who survive hippopotamus attacks in Africa each year compare with the percentage of people who survive mosquito bites?
【简答题】完形填空。 Many of you are studying English and you may be (1)_______ why it is so difficult to learn. It's actually not too difficult to learn (2)______ you know some (3)_______ about the language and cul...
【单选题】Many people feel that human beings are responsible for the disappearance of some other animal species. While we may have hastened the disappearance of some, abundant evidence suggests mankind has had ...
A.
Human beings have hastened the disappearance of some.
B.
There was mass extinction long before humanity's time on Earth.
C.
Human beings'activities have had great impact on the earth.
D.
Many species have extinct since the human race came into being.