A:Looking
B:Look
C:To look
D:Looked
—As we know it's difficult to live in a foreign country.
—________ if you can't understand the language there.
如图是某同学在“目镜10×,物镜40×”时显微镜下看到的图像,下列选项是有关显微镜的使用步骤的,前一项是操作,后一项是目的,其中错误的是( )
图中能使腐烂的水果散发出酒味的微生物是( )