填入下面一段文字横线处的语句，最恰当的一句是（ ）辣，我们都不陌生，很多人无辣不欢甚至吃辣上瘾，这是因为辣椒素等辣味物质刺激舌头、口腔的神经末梢时，会在大脑中形成类似灼烧的感觉，机体就反射性地出现心跳加速、唾液及汗液分泌增多等现象， ，内啡肽又促进多巴胺的分泌，多巴胺能在短时间内令人高度兴奋，带来“辣椒素快感”，慢慢地我们吃辣就上瘾了。

– Which color do you prefer, red or black? — Red. For red _____ a sense of energy and strength.

Tom _________ Mary in 1998. That is to say, they _________ for 12 years.

Jim told us all that _______ he said at themeeting was right.

Now large numbers of young people in China ________posting voice messages, articles and photos onto the WeChat (微信) to share with their friends.