A. did

Dr. Sheldrake, the biologist (25)                       designed the study, believes that the results are convincing enough to find out through further experiments precisely how the staring effect might actually came about.

A. which 

A. though

A. parted 

A. worked over 

but I can (20) _____ up television easily enough. You can’t watch television at bus stops!

A. pick

A. whose 

A. current

A. ones

A. in 

Each bird will carry these in a miniature backpack, (15) ________, that is, from the camera, which will hang around its neck.

A. instead 

The readings made by the sensors will be automatically converted into text messages and beamed to the Internet – (14) ________ they will appear on a dedicated ‘pigeon blog’.

A. when 

A. armed

(12) ________, in this case, it’s difficult to view the results as anything but positive.

A. Therefore 

A. result

A. who

Or do they copy one another, perhaps (9) ________ envy or perhaps because they have shared information about the products?

A. for 

A. connection  

A. basing 

(6) ________, we are easily influenced by the people around us.

A. What’s more

It is also thought that young people (5) ______ bodies are still growing may be at particular risk.

A. whose  

(4) ______, these studies are preliminary and the issue needs further, long-term investigation.

A. Additionally

A. risky

In fact, it is impossible to do this, because a rainbow has no end - as you go towards the point where the rainbow seems to touch the ground, it moves away from you as quickly as you (35) ______.

A. progress 

Secondary rainbows are unusual because the light is reflected twice within the raindrop before it (34) ______ a rainbow, so the colors are in reverse order and not as bright as primary rainbows.

A. forms

A. realize

A. depth 

A. single

A. remains

A. whereas

A. correspondent

A. to

A. making

According to medical experts, one in five youngsters (43) _________ anything between two and five hours’ sleep a night less than their parents did at their age.

A. puts

A. or