In our daily life, everyone fails every now and then. It is how you react that makes a_____
A、development
B、difference
C、progress
D、point
经常 的 春天 刮风 这个城市____
X溶液的pH为4,Y溶液的pH为2,X溶液与Y溶液氢离子浓度之比为( ).
A、100:1
B、1:100
C、2:1
D、1:2
女(nǚ):喂(wèi),你(nǐ)回(huí)家(jiā)了(le)?男(nán):没(méi),我(wǒ)在(zài)出(chū)租(zū)车(chē)上(shàng),我(wǒ)去(qù)学(xué)校(xiào)。
ABCDEF已知△ABC中,,那么a:b:c等于( ).
A、1:2:3
B、3:2:1
C、1::2
D、2::1
I just heard ______ bank where Dora works was robbed by ______ gunman wearing a mask.
A、the; /
B、a; /
C、the; a
D、a; the