（）结合幼林松土时开沟施肥，也可在树木四周表层土中施肥。
A、造林后
B、开花后
C、郁闭后
D、结果后
参考答案：A
The result was not as good as expected but the ________ on his face told us that he was still very happy.
A．expression
B．impression
C．celebration
D．appearance
男性，38岁，3日来上腹隐痛，4小时前突发上腹部剧烈疼痛，持续性无放射，呼吸时加剧，伴恶心，全腹压痛和肌紧张，以上腹部最为明显，肝浊音界缩小，无移动性浊音，应首先考虑
A．急性胆囊炎B．急性胰腺炎C．小肠急性扭转D．溃疡病急性穿孔E．急性阑尾炎
