随机生成10个1-100之间的随机数,用语句（ ） A: sample(1:10,100) B: sample(1:100,10) C: sample(10,1:100) D: sample(1~100,10)

What is the good news mentioned in Sample 1?

What gift did Tom give to Jack in Sample 1?

Counter sample can also be called ( ) A: duplicate sample B: sealed sample C: return sample D: reference sample

Counter<br/>sample can also be called _____________.() A: duplicate<br/>sample B: sealed<br/>sample C: confirmed<br/>sample D: contracted<br/>sample

The sample made by the seller according to the buyer’s, and then sent to and confirmed by the buyer is called __________. A: duplicate sample B: returning sample C: original sample D: copy sample

In international trade, according to supplier of the sample, sales by sample can be divided into A: Sales by Seller’s Sample B: Sales by Buyer’s Sample C: Sales by Counter Sample D: Sale by Descriptions or Illustrations E: Sales by Reference Sample

Gram staining involves the following steps like: ( ) A: Make a slide of bacteria sample to be stained. B: Add the secondary stain safranin to the slide and incubate for 1 minute. C: Rinse sample or slide with acetone or alcohol for 30 seconds and rinse with a gentle stream of water. D: Add the primary stain (crystal violet) to the sample or slide and incubate for 1 minute.

Q：What is the good news mentioned in Sample 1? A: The good news is that Lucy has _______________.

2. When do Ruth and Bill plan to Hong Kong for vacation (Sample 1)?