题干

分别由不同物质a、b、c 组成的三个实心体,它们的体积和质量的关系如图所示,由图可知下列说法正确的是( )

A:a物质的密度最大

B:b 物质的密度是1.0×103kg/m3

C:c物质的密度是a的两倍

D:b、c的密度与它们的质量、体积有关

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答案(点此获取答案解析)

B

同类题1

根据短文理解,选择正确答案。

    I wandered into the small store where I usually buy milk, when the store owner received a call from a customer. The customer and his wife had shopped there several months earlier. He noticed that his wife really liked one thing in the store, so he wanted to buy it as a surprise.

    But the customer was in Tennessee, far away from the store which was in Maine. What was more, he had been to the store several months earlier, and it was difficult to believe that the store owner would remember him, or what he was looking for.

    The store owner took a few close-up photos with her camera, and e-mailed them to the customer on the computer. The customer looked at the photos, and decided which one he wanted. They talked and discussed a price over the phone. She took care of the credit card transaction (交易) online, and promised the gift would be shipped out that afternoon.

    The store owner was really smart. She was willing to push herself to find new ways to make the transaction actually happen. And it did work. However, it was the first time she had ever done it.

    I was amazed that the store owner discovered a creative solution that could lead to a new way of doing business. I was impressed by what she did—so easily, but how difficult it is for many of us to make that leap(飞跃). I'm not just talking about technology, but about learning how to adapt to change. Most people hate or fear change unless they get to know exactly what change needs to be made. However, we should realize that challenge and opportunity go hand in hand.

同类题2

阅读理解

COMMERCIAL INVOICE(发货单)

Date: December 10, 2016                  Invoice No: D15454978E

Purchase Order No:8928                   Bill of loading/ Air Waybill No:2309456703W

Contact name: Dan Richman

Company name: Scan Technology, Ltd.

Company address: 2, South Wabash

Chicago, IL60637

Telephone number: (1) 319 554 811

E-mail: danrichman@scantech.com

CONSIGN EE(收件人)

Contact name: Lee Haojie

Company name: First Computers Co.

Company address: 35 HeDong Road Beijing, China

Telephone number: (86) 134591102

E-mail: haojie@first.com.cn

Goods Description

Model number

Quantity

Country of Origin

Unit Value

Total Value

80211 Handheld

Scanner

8021101

3

USA

$120.00

$360.00

80211Base Communicator

8021183

1

USA

$200.00

$200.00

80211 Cables and

Connectors

8021111

3

USA

$30.50

$91.50

Comments: Mr. Lee, I am able to offer a 8% discount since your total purchase is above $500. We value your business and are looking forward to more opportunities with you.

Invoice Sub Total

$651.50

Discount

$52.12

Insurance

$0.00

Invoice Total

$599.38

Shipper's signature

:Dan Richman

Number of Package

1

Total Weight

5.15kg

From: Lee Haojie

Subject: Handheld Scanners

    Ms. Hu, I received the parcel from Scan Technology 1 piece. The scanner model they sent is correct, and the quantity is right. However, I've discovered the cables and connectors are all wrong. They are not suitable for the model 8021101.

    Can you do me a small favor and go through the product information website and see if the cables and connectors are still compatible (兼容的)with the 8021101 scanners? I have no wish to unpack the cables and connectors and try connecting them to the scanners. I believe we will have problem asking for an exchange if the cables and connectors are not compatible. If the website suggests an incompatibility, please contact Dan Richman and request an exchange for the collect model. (Refer to the invoice for his e-mail address.)

    I will only use the scanners for our project once we have resolved the exchange issue. We should not proceed unless we get confirmation (证实)on their compatibility. I am looking to resolve this in the shortest possible time as it would be disastrous to wait for this exchange without making progress on the project.

Haojie