[填空题]At the international conference, the scientist gave a report (base)（）on his recent experiments.

[填空题]At the international conference, the scientist gave a report (base)（）on his recent experiments.

[简答题]The third International Conference on Information Engineering will be held this spring at Guangzhou University. We take great pleasure in inviting you to attend this meeting. Usually, there were about 800 scientists and experts from all over the world participating in the conference. If you have any papers to submit (提交) or topics on which you would like to give talks, please inform us as soon as possible so that we could finalize (定妥) the program soon.

[填空题]

When was the international conference that divided the world into 24 time zones held

[填空题]At the international conference, the Chinese expert gave a report on world economy based on his recent investigation.

[单项选择]At the international conference. the famous scientist gave an excellent report based on his recent experiment．（）
A. 在国际会议上，这位著名科学家根据他最近的实验结果做了精彩的报告。
B. 在国际会议上，这位著名科学家宣读了他最近实验的精彩报告。
C. 在国际会议上，这位著名科学家以他的精彩报告为基础，做了实验。
D. 这位著名科学家以最近的国际会议为基础，宣读了精彩的实验报告。

[填空题]An international conference means a meeting held in different countries every year.

[填空题]Harry is leaving for an international conference tomorrow, __________________ (一切费用将由公司负担)

[简答题]The international conference will ____________(到结束之时将持续整整一个星期).

[简答题]The sixteenth international AIDS conference opened on Sunday in Toronto, Canada. More than twenty-four thousand delegates from one hundred thirty-two countries are attending the six-day conference. They include scientists, health care providers, activists, political and business leaders and people living with the disease. Many people attending the AIDS conference represent private nongovernmental organizations, or NGOs.
Political scientists often describe NGOs as "pressure groups" because of their effect on world issues. They have little official power over international decision-making. However, NGOs often influence international policy.
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A broad definition of NGO is any non-profit group that is independent of government. Most of
these private organizations have one or more goals. For example, some support community development, provide social services and help poor people. Others support human rights and social justice. Still others work to protect the