①地面对小车的支持力与木块对小车的压力

②小车对木块的摩擦力与木块受到的水平拉力

③地面对小车的摩擦力与木块对小车的摩擦力．

阅读短文，从方框中选择适当的词并用其正确的形式填空，使短文通顺、意思完整。请每空限填一词，每词限用一次。方框中有两项多余的。

Are you still doing the V for victory sign? It's out. The latest popular hand gesture（手势）is putting both of your hands and put them together to make a heart—shape. It is  ____ “hand heart”.

 Many young pop    ____  in the US have done the move in recent photos. “The‘hand heart’gesture means something    ____   'I love you' and 'thank you’, ”said Taylor Swift,the country singer.  “You can send a sweet，simple message without ____  a word.”
 Swift often does it at her concerts. And she is believed to be the first to   ____  it popular.
 Last month，Justin Bieber and____ uperstar friends did the “ hand heart” and put the photos online.They did it to help out three kids whose parents were killed in a car accident.

“It used to take much  ____  for nonverbal（非语言的）culture to move. But now ,It moves faster____ we have smart phones and the Internet.
In the Republic of Korea, the “hand heart “ has been  ____  for a long time, but in a different  ____  . People there put their hands above their heads and making a bigger heart shape with their arms. It means: “I love you.”

SDR即特别提款权，是IMF于1969年创设的一种国际储备资产，用以弥补成员国官方储备不足。国际货币基金组织(IMF)执董会正式批准人民币加入“SDR”于2016年10月l日正式生效，这不仪有助于提高SDR作为储备资产的吸引力，而且有助于人民币“走出去”。下列对人民币加入SDR货币篮子认识正确的是（    ）

①完成了人民币的国际化进程，推动了全球货币多元化

②加快人民币自由流通，发挥储备投资功能

③提高人民币的汇率，吸引中国人出境旅游

④方便了我国消费者持人民币直接境外旅游、购物

读我国地形剖面图，完成问题．
 
甲区域与乙区域比较（ ）

数一数，画一画，写一写。