It can infect hardwood trees at their roots and butts, which is the base of the tree’s trunk at ground level.
A、sunscald
B、gall
C、wilt
D、powdery mildew
E、rot
A、sunscald
B、gall
C、wilt
D、powdery mildew
E、rot
What fears people most?
A.Poultry will infect many people.
B.The disease can spread quickly among people.
C.There will be human-to-human transmission.
D.A new disease combining bird and a human flu will break out.
So far H5N1 can easily infect human beings, and spreads readily between people.
A.Y
B.N
C.NG
A.viruses
B.disease
C.germs
D.sickness
A、Taenia solium and Trichinella spiralis
B、Taenia solium and Hymenolepis brevis
C、Fasciolopsis buslik and Paragonimus westermani
D、Schistosoma japonicum and hookworm
A.sickness
B.disease
C.germs
D.viruses
What fears people most?
A.Poultry will infect many people.
B.The disease can spread quickly among people.
C.There will be human-to-human transmission.
D.A new disease combining bird and a human flu will break out.
(6分13秒-7分21秒)Bill Gates points out that “ The last time a germ game was done in the United States was back in 2001, and it didn’t go so well. So far the score is germs: 1, people: 0.” Here he actually means that ______
A、Germs and people are competing with each other
B、Germs win 1 point while people didn’t
C、Germs can easily win over people and infect more people.
D、Germs score higher than people in terms of competition.
A.damageable
B.susceptible
C.vulnerable
D.changeable
A.damageable
B.susceptible
C.changeable
D.vulnerable
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