单项选择题

代时为0.5h的细菌由10^3增加到10^9个需要多长时间（）
A、40h
B、20h
C、10h
D、3h

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Directions: Suppose you are a secretary of Fair-lady Clothing Co., Ltd.. Miss Cherry, General Manger, is going to attend the Spring Canton Fair of this year, so she asks you to design a business card for her according to the following information.
1.Company: Guangzhou Emily Clothing Co., Ltd.
2. Name: Miss Cherry
3. Title: General manager
4. Address: 23 Hongxin Road, Zengcheng, Guangzhou, Guangdong Province, China
5. Post Code: 510043
6.Tel: 020-87323815
7. Fax: 020-87323843
8. Email: cherryfairlady@21cn.net
9. Website: www. fairlady.com

答案：略

心理健康与品格塑造2023章节测试答案_心理健康与品格塑造智慧树知到答案-2

答案： A:满意
B:积极
C:乐观
D:美好
答案: 【积极】
2、多选题：
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