【单选题】The end of the passage implies that the water finally available for mankind to utilize each year ______.
A.
is enough to meet all human needs
B.
is a little more than enough for all human needs
C.
is not adequate for all human needs
D.
is adequate now but will not be enough for some years to come
【简答题】a-b表示:______ 3a表示:______ 3a+2b表示:______.
【单选题】In ( ) scavenging the incoming air enters at the lower end of the cylinder andexhaust gases are forced out at the top
【多选题】在社会主义社会中,关于改革、发展、稳定的关系的下列表述中,不正确
C.
发展以改革为条件,稳定以发展为基础,改革以稳定为目标.
【简答题】n/m/A/B中A表示(),B表示()。
【多选题】在社会主义社会中,关于改革、发展、稳定的关系的下列表述中,不正确的有( )。
C.
发展以改革为条件,稳定以发展为基础,改革以稳定为目标
【单选题】On the other hand, if a character has some strokesenclosed from the lower end (including lower left and lower left to right),first write _______,