Before the general election many senior citizens signed the( )against the spreading of nuclear arms.
A.contract B.petition C.supplication D.potential
Before the general election many senior citizens signed the( )against the spreading of nuclear arms.
The girl( )her tablemate’s arm to see if she was fast asleep at class.
A noisy aggressive cousin of the crow, the magpie has those bird’ s thievish habits.
The sheer diversity of tropical plants represents a seemingly ( ) source of raw materials, of which only a few have been utilized.
Though I had tried to explain it as clearly as possible, my explanation seemed not to( ).
A major reason for conflict in the animal world is territory. The male animal establishes an area. The size of the area is sufficient to provide food for him, his mate and their offspring. Migrating birds, for example, used up the best territory in the order of “first come, first(1).” The late arrivals may acquire(2)territories, but less food is available, or they are too close to the(3)of the enemies of the species.(4)there is really insufficient food or the danger is very great, the animal will not(5). In this way, the members of the species which are less fit will not have offspring. When there is conflict(6)territory, animals will commonly use force, or a show of force, to decide which will stay and which will go. It is interesting to note,(7),that animals seem to use only the minimum amount of force(8)to drive away the intruder. There is usually no killing. In the case of those ani¬mals which are capable of (9)each other great harm, (10) is a system for the losing animal to show the winning animal that he wishes to submit. When he shows this, the victor normally stops fighting.