4. What do we learn about nano-spiders in the fifth paragraph? A They could protect our bodies from disease in the future.
B They are already being used to fight cancer,
they have been used for various medical purposes in the past.
D They have not actually been invented yet.
5What does the writer say about arguments against the use of nanotechnology?
A People are concerned that it is used to build computer parts.
B People are concerned that nano-products are not tested before they are sold
C There are concerns about whether the industry has strict rules for safety
D There are concerns about nanotechnology in medicine.​

Одним занятым утром одиннадцать занятых кошек умывали свои мордочки(лица) и чистили свои зубы в доме. Двенадцать занятых обезьян играли в футбол в зоопарке. Тринадцать занятых свинки читали хорошие книги в школе. Четырнадцать занятых кролика писали в их рабочих тетрадях. 15 занятых лисы считали их карандаши. 16 занятых собак бегали и прыгали в парке. 17 занятых утки плавали в реке. 18 занятых птички летали в небе. 19 занятых лягушки пересекали лес. 20 занятых петуха пели на ферме. И только один слоненок(малыш-слоник) спал в своей комнате

I want to speak about Russia and Canada. The Russian capital is  Moscow, the capital of Canada is Ottawa. Russia's population is much larger than Canada. Russia has 143 billion and Canada has 33 billion. These countries are located on different continents. Russia is in Eurasia. Canada is in North America. Canada is bordered by three oceans. This is the Pacific Ocean, Atlantic, Arctic. Russia is bordered by the same oceans.Well, in these countries, people speak different languages​​. In Russia is Russian and in Canada is English. 

Russia has many attractions. For example, Red Square, Kizhi, the Winter Palace. Canada has no less interest than Russia. In Canada, people can see Tower CN Tower, Mississauga.