|
1. |
No one knows why many ships and planes have disappeared in the Bermuda
Triangle in recent years. It's still
. |
|
2. |
Captain James Cook led three
to the Pacific and Antarctica from
1768 to 1779. |
|
3. |
The work of many scientists over a period of about 150 years contributed to
the
of the computer. |
|
4. |
Three important scientific advances took place during the mid-1890s: the
of X-rays, radioactivity, and the electron. |
|
5. |
Landing people on the moon in 1969 was a great
in space
technology. |
|
6. |
In 1995, a powerful earthquake struck Kobe, Japan. It was
for
people living in the area. |
