题目

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。 Keeping a diary in English is one of the best ways to improve our English writing ability. Compared with other forms of writing, it is shorter and takes (little) time. It can help us to develop the habit of thinking in English.we stick to this practice, (gradual) we'll learn how to express (表达) ourselves in English. In keeping a diary in English, we certainly run up against many (difficult). In the first place, it often (happen) that we have trouble (find) proper words and phrases to如图所示，甲、乙两支完全相同的试管，分别装有质量相等的液体，甲试管竖直放置，乙试管倾斜放置，两试管液面相平．设液体对两试管底的压强分别为p甲和p乙，则（ ）A．p甲＜p乙B．p甲=p乙C．p甲＞p乙D．条件不足，无法判断